Heights: 'm' is a specific height in metres, 'c' is a contour height.
| No. | Name | Remoteness | Grid Ref | 1:50000 | 1:25000 | Group | Height | Drop | Notes |
|---|---|---|---|---|---|---|---|---|---|
| 1 | West Tump | 16.450km | SM596093 | 157 | 36 | Gwales | 17m | 17m | The Group name is also known by its modernised Old Norse rendition of Grassholm (ON gras, holmr). The summit is situated on a tidal island. |
| 2 | Gwales | 16.250km | SM598093 | 157 | 36 | Gwales | 42m | 42m | The Group name is also known by its modernised Old Norse rendition of Grassholm (ON gras, holmr). The summit is situated on an island. |
| 3 | Emsger | 7.725km | SM651226 | 157 | 35 | Y Cerrig | 37m | 37m | The Group name is also known by its English rendition of Bishop and Clerks or Bishop and his Clerks. The name of the island is also known as South Bishop. The summit is situated on an island. |
| 4 | Daufraich | 6.450km | SM661237 | 157 | 35 | Y Cerrig | 21m | 21m | The Group name is also known by its English rendition of Bishop and Clerks or Bishop and his Clerks. The summit is situated on an island. |
| 5 | North Bishop | 6.275km | SM666277 | 157 | 35 | Y Cerrig | 22m | 22m | The Group name is also known by its English rendition of Bishop and Clerks or Bishop and his Clerks. The summit is situated on an island. |
| 6 | North Bishop | 6.200km | SM668278 | 157 | 35 | Y Cerrig | 21m | 21m | The Group name is also known by its English rendition of Bishop and Clerks or Bishop and his Clerks. The summit is situated on a tidal island. |
| 7 | North Bishop | 6.000km | SM670280 | 157 | 35 | Y Cerrig | 44m | 44m | The Group name is also known by its English rendition of Bishop and Clerks or Bishop and his Clerks. The summit is situated on an island. |
| 8 | Carreg Rhoson | 5.950km | SM664253 | 157 | 35 | Y Cerrig | 23m | 23m | The Group name is also known by its English rendition of Bishop and Clerks or Bishop and his Clerks. The island name is spelt as Careg Rhoson on the 1995 OS 1:25000 Outdoor Leisure map number 35. The summit is situated on an island. |
| 9 | North Bishop | 5.900km | SM672281 | 157 | 35 | Y Cerrig | 24m | 24m | The Group name is also known by its English rendition of Bishop and Clerks or Bishop and his Clerks. The summit is situated on an island. |
| 10 | Carreg Rhoson | 5.775km | SM666254 | 157 | 35 | Y Cerrig | 23m | 23m | The Group name is also known by its English rendition of Bishop and Clerks or Bishop and his Clerks. The island name is spelt as Careg Rhoson on the 1995 OS 1:25000 Outdoor Leisure map number 35. The summit is situated on an island. |
| 11 | Carreg Rhoson | 5.600km | SM667254 | 157 | 35 | Y Cerrig | 44m | 44m | The Group name is also known by its English rendition of Bishop and Clerks or Bishop and his Clerks. The island name is spelt as Careg Rhoson on the 1995 OS 1:25000 Outdoor Leisure map number 35. The summit is situated on an island. |
| 12 | The Head | 5.375km | SM729047 | 157 | 36 | Sgoc-holm | 55c | 55c | The Group name is also known by its modernised Old Norse rendition of Skokholm (ON stokkr, holmr). The summit is situated on an island. |
| 13 | Carreg Rhoson | 5.250km | SM671256 | 157 | 35 | Y Cerrig | 22m | 22m | The Group name is also known by its English rendition of Bishop and Clerks or Bishop and his Clerks. The island name is spelt as Careg Rhoson on the 1995 OS 1:25000 Outdoor Leisure map number 35. The summit is situated on an island. |
| 14 | Carreg Rhoson | 5.175km | SM672256 | 157 | 35 | Y Cerrig | 20c | 20c | The Group name is also known by its English rendition of Bishop and Clerks or Bishop and his Clerks. The island name is spelt as Careg Rhoson on the 1995 OS 1:25000 Outdoor Leisure map number 35. The summit is situated on an island. |
| 15 | Carreg Rhoson | 5.050km | SM673257 | 157 | 35 | Y Cerrig | 24m | 24m | The Group name is also known by its English rendition of Bishop and Clerks or Bishop and his Clerks. The island name is spelt as Careg Rhoson on the 1995 OS 1:25000 Outdoor Leisure map number 35. The summit is situated on an island. |
| 16 | Ynys Echni | 4.975km | ST222646 | 171/182 | 151 | Ynys Echni | 32m | 32m | The Group name is also known by its modernised Old Norse rendition of Flatholm (ON floti, holmr). The island is named as Bradan Relice in Old English documents. The summit is situated on an island. |
| 17 | Tyle Garw | 4.875km | SN785178 | 160 | 12 | Y Mynydd Du | 468m | 40c | The Group name is also known by its English rendition of The Black Mountain. Tyle Garw holds the distinction of being the remotest hill of mainland Wales. |
| 18 | Ynysoedd y Moelrhoniaid | 4.875km | SH267947 | 114 | 262 | Ynysoedd y Moelrhoniaid | 20m | 20m | The Group name is also known by its modernised Old Norse and also English rendition of The Skerries (ON sker, E skerry, the). The summit is situated on a tidal island. |
| 19 | Foel Ucha | 4.850km | SN806622 | 147 | 187/200 | Elenydd-Mallaen | 476m | 31c | Foel Ucha is the locally known name for this hill. The hill is also known locally as Foel Moel Prysgau. The hill is unnamed on OS maps. |
| 20 | Ynys Berchen | 4.775km | SH271950 | 114 | 262 | Ynysoedd y Moelrhoniaid | 20c | 20c | The Group name is also known by its modernised Old Norse and also English rendition of The Skerries (ON sker, E skerry, the). The summit is situated on an island. |
| 21 | Cerrig Coegion | 4.750km | SN790176 | 160 | 12 | Y Mynydd Du | 474m | 57c | The Group name is also known by its English rendition of The Black Mountain. Named as Cerrig Coegion in early 20th century local poetry entitled 'The Shepherd of The Black Mountain'. The hill is unnamed on OS maps. Triangulation pillar at 471m situated southward of summit at grid reference SN 790174. |
| 22 | Pig Stone | 4.750km | SM713092 | 157 | 36 | Sgomer | 27m | 27m | The Group name is also known by its modernised Old Norse rendition of Skomer (ON skálm, ey). The summit is situated on an island. |
| 23 | Carnedd Uchaf | 4.500km | SH687669 | 115 | 17 | Carneddau | 926m | 32c | Renaming of mountain as Carnedd Gwenllian accepted by the OS and officially announced on the 26th September 2009. |
| 24 | Pant-llwyd | 4.500km | SN834706 | 135/136/147 | 200 | Elenydd-Mallaen | 549m | 47c | A less remote (4.000km) second summit named Cefn Ffosyrewig of same map height is situated southward of summit at grid reference SN 832692. |
| 25 | Foel Grach | 4.350km | SH688658 | 115 | 17 | Carneddau | 976m | 40m | Roofed and unlocked mountain shelter situated just below the summit. |
| 26 | Foel Ganol | 4.300km | SN809916 | 135/136 | 214/215 | Pumlumon | 548m | 25c | The Group name is also known as Plynlimon, a rendition commonly used in both the Welsh and English language. Foel Ganol is the locally known name for this hill. Designated name does not appear on OS maps. Named as Foel Isaf on the 2005 OS 1:25000 Explorer map numbers 214 and 215. |
| 27 | Esgair Garthen | 4.250km | SN825642 | 147 | 187/200 | Elenydd-Mallaen | 507m | 21c | Height of 508m on the 1985 OS 1:50000 Landranger map number 147. |
| 28 | Foel Isaf | 4.250km | SN802911 | 135/136 | 214/215 | Pumlumon | 565m | 33c | The Group name is also known as Plynlimon, a rendition commonly used in both the Welsh and English language. Foel Isaf is the locally known name for this hill. The hill name of Foel Isaf appears on OS maps but is designated to a different hill that is positioned at grid reference SN 809916. Named as Foel Uchaf on the 2005 OS 1:25000 Explorer map numbers 214 and 215 and on the 1986 OS 1:50000 Landranger map numbers 135 and 136. |
| 29 | Llethr Gwaered | 4.225km | SN801626 | 147 | 187/200 | Elenydd-Mallaen | 490m | 26m | Llethr Gwaered is the locally known name for this hill. The hill is unnamed on OS maps. |
| 30 | Blaen Rhestr | 4.200km | SN844694 | 135/136/147 | 200 | Elenydd-Mallaen | 547m | 38c | Roofed and locked large building situated south-westward of the summit. |
| 31 | Garland Stone | 4.125km | SM721104 | 157 | 36 | Sgomer | 32m | 32m | The Group name is also known by its modernised Old Norse rendition of Skomer (ON skálm, ey). The summit is situated on an island. |
| 32 | Ynys Bery | 4.100km | SM700218 | 157 | 35 | Ynys Dewi | 71m | 71m | The Group name is also known by its modernised Old Norse rendition of Ramsey (ON Hrafn, ey). Older Welsh names for the Group name are Ynys yr Hyrddod and Ynys Dyfannog. Second summit of same map height situated north-eastward of summit at grid reference SM 701219. Estimated prominence and included in summit list due to contour configuration of 15m between summits of same map height. The summit is situated on an island. |
| 33 | Foel Issa | 4.075km | SN803614 | 147 | 187/200 | Elenydd-Mallaen | 473m | 38c | Foel Issa is the locally known name for this hill. The hill is also known locally as Foel Moel Prysgau. The hill is unnamed on OS maps. |
| 34 | Mynydd Enlli | 4.025km | SH123219 | 123 | 253 | Enlli | 167m | 167m | The Group name is also known by its modernised Old Norse rendition of Bardsey (ON Baror, ey). The summit is situated on an island. |
| 35 | Foel Fras | 3.975km | SH696681 | 115 | 17 | Carneddau | 942m | 48m | Spelling of mountain name ascertained from 'A Gazetteer of Welsh Place-Names'. Mountain name written as Foel-fras on OS maps. Triangulation pillar situated at the summit. |
| 36 | Gorse Hill North-west Top | 3.975km | SM722099 | 157 | 36 | Sgomer | 78m | 16c | The Group name is also known by its modernised Old Norse rendition of Skomer (ON skálm, ey). Named from hill situated south-eastward of summit. The hill is unnamed on OS maps. Included in summit list due to contour configuration. The summit is situated on an island. |
| 37 | Carnedd Llywelyn | 3.950km | SH683644 | 115 | 17 | Carneddau | 1064m | 752m | Spelling of mountain name ascertained from 'A Gazetteer of Welsh Place-Names'. Mountain name spelt as Carnedd Llewelyn on OS maps. |
| 38 | Llethr Hir | 3.950km | SN833671 | 135/136/147 | 187/200 | Elenydd-Mallaen | 480c | 27c | |
| 39 | Pumlumon Arwystli | 3.925km | SN814877 | 135 | 214 | Pumlumon | 741m | 64c | The Group name is also known as Plynlimon, a rendition commonly used in both the Welsh and English language. The summit of the mountain is named Pen Pumlumon Arwystli. |
| 40 | Ynys Bery | 3.925km | SM701219 | 157 | 35 | Ynys Dewi | 71m | 71m | The Group name is also known by its modernised Old Norse rendition of Ramsey (ON Hrafn, ey). Older Welsh names for the Group name are Ynys yr Hyrddod and Ynys Dyfannog. Second summit of same map height situated south-westward of summit at grid reference SM 700218. Estimated prominence and included in summit list due to contour configuration of 15m between summits of same map height. The summit is situated on an island. |
| 41 | Drygarn Fawr | 3.900km | SN861584 | 147 | 187/200 | Elenydd-Mallaen | 645m | 257c | Height of mountain ascertained from the 1985 OS 1:50000 Landranger map number 147. Triangulation pillar at 641m situated west south-westward of summit at grid reference SN 862583. |
| 42 | Ochr Helygnant | 3.8375km | SN796917 | 135 | 215 | Pumlumon | 550m | 15c | The Group name is also known as Plynlimon, a rendition commonly used in both the Welsh and English language. The stream flowing south-westward from this hills northern slopes is named Helygnant on the 1788 Gogerddan Estate survey map for 'Huddgen'. Named as Ochr Llygnant on the 2005 OS 1:25000 Explorer map number 215 (the word Llygnant is a corruption of the word Helygnant). Included in summit list due to a rudimentary survey. |
| 43 | Carn Fadog | 3.825km | SN767171 | 160 | 12 | Y Mynydd Du | 512m | 26c | The Group name is also known by its English rendition of The Black Mountain. Spelling of hill name ascertained from 'A Gazetteer of Welsh Place-Names'. Designated name taken from that of ancient cairn situated on summit area. Ancient cairn situated on summit area written as Carn fadog on the 2005 OS 1:25000 Explorer map number 12. |
| 44 | The Stack | 3.825km | SM745054 | 157 | 36 | Sgoc-holm | 20m | 20m | The Group name is also known by its modernised Old Norse rendition of Skokholm (ON stokkr, holmr). The summit is situated on an island |
| 45 | Bera Bach | 3.700km | SH672677 | 115 | 17 | Carneddau | 807m | 19c | |
| 46 | Drum yr Eira | 3.625km | SN851589 | 147 | 187/200 | Elenydd-Mallaen | 600c | 18c | Included in summit list due to a 582m spot height being present on the connecting bwlch with Drygarn Fawr on the OS 1:10,000 map. |
| 47 | Yr Elan | 3.625km | SH673651 | 115 | 17 | Carneddau | 962m | 54c | Spelling of mountain name ascertained from 'A Gazetteer of Welsh Place-Names'. Mountain name spelt as Yr Elen on OS maps. |
| 48 | Llechwedd Crin | 3.600km | SN816922 | 135/136 | 214/215 | Pumlumon | 539m | 19c | The Group name is also known as Plynlimon, a rendition commonly used in both the Welsh and English language. |
| 49 | Cefn Perfedd | 3.575km | SJ099373 | 125 | 255 | Y Berwyn | 604m | 33c | Cefn Perfedd is the locally known name for this hill. The hill is unnamed on OS maps. |
| 50 | Ynys Eilun | 3.575km | SM707219 | 157 | 35 | Ynys Dewi | 25m | 25m | The Group name is also known by its modernised Old Norse rendition of Ramsey (ON Hrafn, ey). Older Welsh names for the Group name are Ynys yr Hyrddod and Ynys Dyfannog. Height of 26m on the 2002 OS 1:50000 Landranger map number 157. The summit is situated on an island. |
| 51 | Aran Fawddwy | 3.550km | SH862223 | 124/125 | 23 | Aran | 905m | 672c | Height of 907m on the 1984 OS 1:50000 Landranger map number 125. Triangulation pillar situated at the summit. |
| 52 | Crug Gynon | 3.550km | SN801638 | 147 | 187/200 | Elenydd-Mallaen | 525m | 62c | |
| 53 | Midland | 3.550km | SM705222 | 157 | 35 | Ynys Dewi | 30m | 30m | The Group name is also known by its modernised Old Norse rendition of Ramsey (ON Hrafn, ey). Older Welsh names for the Group name are Ynys yr Hyrddod and Ynys Dyfannog. Height of summit ascertained from the OS 1:10,000 map. The summit is situated on an island. |
| 54 | Bryn Du | 3.500km | SN940421 | 147/160 | 188 | Mynydd Epynt | 462m | 19m | Spelling of Group name ascertained from 'A Gazetteer of Welsh Place-Names'. Group name spelt as Mynydd Eppynt on OS maps. Height of 463m on the 1985 OS 1:50000 Landranger map numbers 147 and 160. The summit is situated within the Sennybridge Artillery Range Training Area. |
| 55 | Cadair Fronwen | 3.500km | SJ077346 | 125 | 255 | Y Berwyn | 784m | 72c | Spelling of mountain name ascertained from 'A Gazetteer of Welsh Place-Names'. Mountain name spelt as Cadair Bronwen on OS maps. Height of mountain ascertained from the 1984 OS 1:50000 Landranger map number 125. |
| 56 | Mynydd Plasyfaerdref | 3.500km | SJ089369 | 125 | 255 | Y Berwyn | 621m | 36c | Mynydd Plasyfaerdref is the locally known name for the land the summit of this mountain is situated on. The mountain is unnamed on OS maps. |
| 57 | Cerrig Llwyd y Rhestr | 3.400km | SN848606 | 147 | 187/200 | Elenydd-Mallaen | 590c | 18c | Included in summit list due to a rudimentary survey. |
| 58 | Clawdd Du Mawr | 3.400km | SN851690 | 135/136/147 | 200 | Elenydd-Mallaen | 535m | 27c | |
| 59 | Ynys Gwelltog | 3.400km | SM704225 | 157 | 35 | Ynys Dewi | 50c | 50c | The Group name is also known by its modernised Old Norse rendition of Ramsey (ON Hrafn, ey). Older Welsh names for the Group name are Ynys yr Hyrddod and Ynys Dyfannog. The summit is situated on a tidal island. |
| 60 | Banc Blaen-myherin | 3.375km | SN792787 | 135/147 | 213 | Elenydd-Mallaen | 537m | 49c | Banc Blaen-myherin is the locally known name for this hill. The hill is unnamed on OS maps. |
| 61 | Twyn Rhyd-car | 3.375km | SN960422 | 147/160 | 188 | Mynydd Epynt | 454m | 36c | Spelling of Group name ascertained from 'A Gazetteer of Welsh Place-Names'. Group name spelt as Mynydd Eppynt on OS maps. The hill is also known locally as Troedrhiw Caeth. Height of hill ascertained from the 1985 OS 1:50000 Landranger map numbers 147 and 160. The summit is situated within the Sennybridge Artillery Range Training Area. |
| 62 | Ynys Cantwr | 3.375km | SM705223 | 157 | 35 | Ynys Dewi | 54m | 54m | The Group name is also known by its modernised Old Norse rendition of Ramsey (ON Hrafn, ey). Older Welsh names for the Group name are Ynys yr Hyrddod and Ynys Dyfannog. Height of 55m on the 2002 OS 1:50000 Landranger map number 157. The summit is situated on a tidal island. |
| 63 | Carn Hyddgen | 3.350km | SN792908 | 135 | 215 | Pumlumon | 566m | 51c | The Group name is also known as Plynlimon, a rendition commonly used in both the Welsh and English language. Ancient summit cairn named Carn Gwilym. |
| 64 | Foel Cerrigbrithion | 3.350km | SN765920 | 135 | 23/215 | Pumlumon | 529m | 102c | The Group name is also known as Plynlimon, a rendition commonly used in both the Welsh and English language. Second hill of same map height situated northward of summit at grid reference SN 765926. Estimated prominence due to contour configuration of 30m between summits of same map height. |
| 65 | Gorse Hill | 3.350km | SM726094 | 157 | 36 | Sgomer | 79m | 79m | The Group name is also known by its modernised Old Norse rendition of Skomer (ON skálm, ey). Triangulation pillar situated at the summit. The summit is situated on an island. |
| 66 | Bera Mawr | 3.325km | SH674682 | 115 | 17 | Carneddau | 794m | 31c | |
| 67 | Mew Stone | 3.325km | SM727083 | 157 | 36 | Sgomer | 60m | 60m | The Group name is also known by its modernised Old Norse rendition of Skomer (ON skálm, ey). The summit is situated on a tidal island. |
| 68 | Carnllundain | 3.300km | SM696234 | 157 | 35 | Ynys Dewi | 136m | 136m | The Group name is also known by its modernised Old Norse rendition of Ramsey (ON Hrafn, ey). Older Welsh names for the Group name are Ynys yr Hyrddod and Ynys Dyfannog. Triangulation pillar situated at the summit. The summit is situated on an island. |
| 69 | Cyrniau Nod | 3.300km | SH988279 | 125 | 239/255 | Y Berwyn | 667m | 179m | |
| 70 | Trumau | 3.300km | SN854678 | 135/136/147 | 187/200 | Elenydd-Mallaen | 534m | 31m | Designated grid reference for summit is approximately one metre higher when compared to the positioning of the 533m spot height at grid reference SN 850676 on the 2005 OS 1:25000 Explorer map numbers 187 and 200. |
| 71 | Trum y Gwr | 3.300km | SN830718 | 135/136/147 | 200 | Elenydd-Mallaen | 524m | 16c | Included in summit list due to a rudimentary survey. |
| 72 | Ynys Llanddwyn | 3.300km | SH388629 | 114 | 263 | Ynys Môn | 20c | 20c | The Group name is also known by its modernised Old Norse rendition of Anglesey (ON Qngull, ey). The summit is situated on an island. |
| 73 | Foel Grafiau | 3.250km | SN759920 | 135 | 23/215 | Pumlumon | 493m | 27c | The Group name is also known as Plynlimon, a rendition commonly used in both the Welsh and English language. |
| 74 | Bryn Moel | 3.225km | SN772911 | 135 | 23/215 | Pumlumon | 491m | 34c | The Group name is also known as Plynlimon, a rendition commonly used in both the Welsh and English language. |
| 75 | Foel Fawr | 3.225km | SM705225 | 157 | 35 | Ynys Dewi | 72m | 29c | The Group name is also known by its modernised Old Norse rendition of Ramsey (ON Hrafn, ey). Older Welsh names for the Group name are Ynys yr Hyrddod and Ynys Dyfannog. The summit is situated on an island. |
| 76 | Disgwylfa | 3.200km | SN815178 | 160 | 12 | Y Mynydd Du | 544m | 40c | The Group name is also known by its English rendition of The Black Mountain. |
| 77 | Pen Diban | 3.200km | SH112205 | 123 | 253 | Enlli | 20m | 15c | The Group name is also known by its modernised Old Norse rendition of Bardsey (ON Baror, ey). Pen Diban is the locally known name for this hill. The hill is also known locally as the South End. Included in summit list due to contour configuration. The summit is situated on an island. |
| 78 | Esgair Llyn-du | 3.175km | SN767616 | 146/147 | 187 | Elenydd-Mallaen | 530c | 17c | Included in summit list due to contour configuration. |
| 79 | Grug Crofftau | 3.175km | SN750612 | 146/147 | 187 | Elenydd-Mallaen | 530c | 23c | Grug Crofftau is the locally known name for this hill. The hill is unnamed on OS maps. |
| 80 | Mynydd Coch | 3.175km | SH938196 | 125 | 23 | Y Berwyn | 569m | 40m | Triangulation pillar situated at the summit. |
| 81 | Y Groes Fagl | 3.175km | SH988289 | 125 | 255 | Y Berwyn | 659m | 15c | Included in summit list due to a rudimentary survey. |
| 82 | Cefn Glas | 3.150km | SH819279 | 124/125 | 23 | Arennig | 497m | 42c | Spelling of Group name ascertained from 'A Gazetteer of Welsh Place-Names'. Group name spelt as Arenig on OS maps. |
| 83 | Llethr Brith | 3.125km | SN757614 | 146/147 | 187 | Elenydd-Mallaen | 524m | 15c | Estimated height of hill from contour configuration. Included in summit list due to contour configuration. A more remote (3.425km) 520m continuous ring contour that is part of the hill known locally as Esgair Ceffylau and is clear of forest is positioned at grid reference SN 756611. |
| 84 | Outer Head | 3.125km | SS384877 | 159 | 164 | Penrhyn Gwyr | 56m | 56m | The Group name is also known by its modernised Old English rendition of Worm's Head (OE wyrm, heafod). The older Welsh names for the promontory are Ynysweryn, Pen-pryf and Pen Pyrod. The summit is situated on a tidal island. Outer Head is one of only two summits in this list that are part of a tidal island that is connected to the Welsh mainland. |
| 85 | West Beacon Point | 3.125km | SS132962 | 158 | 36 | Ynys Byr | 60m | 60m | The Group name is also known by its modernised Old Norse rendition of Caldey (ON kald, ey). The summit is situated on an island. |
| 86 | Y Drosgl | 3.100km | SH664679 | 115 | 17 | Carneddau | 758m | 37c | Spelling of mountain name ascertained from 'A Gazetteer of Welsh Place-Names'. Mountain name spelt as Drosgl on OS maps. |
| 87 | Crib-y-rhiw | 3.075km | SH663249 | 124 | 18 | Rhinogydd | 670c | 18c | Included in summit list due to contour configuration. |
| 88 | Bryn Trapau | 3.050km | SN816658 | 135/136/147 | 187/200 | Elenydd-Mallaen | 470m | 21c | |
| 89 | Cerrig Coediog | 3.050km | SJ113386 | 125 | 255 | Y Berwyn | 592m | 30m | Summit height of 591.78m and 30.43m prominence ascertained from Leica Differential GPS survey. |
| 90 | Fan y Big | 3.050km | SO036206 | 160 | 12 | Bannau Brycheiniog | 719m | 30c | The Group name is also known by its English rendition of the Brecon Beacons. |
| 91 | Cyrniau y Llyn | 3.000km | SH999244 | 125 | 239 | Y Berwyn | 517m | 37c | Height of hill ascertained from the 1984 OS 1:50000 Landranger map number 125. |
| 92 | Graig Wen | 3.000km | SN786629 | 146/147 | 187 | Elenydd-Mallaen | 479m | 16c | Graig Wen is the locally known name for this hill. The hill is unnamed on OS maps. Included in summit list due to contour configuration. |
| 93 | Pen Bwlch | 3.000km | SN773605 | 146/147 | 187 | Elenydd-Mallaen | 548m | 90c | Pen Bwlch is the locally known name for this hill. The hill is unnamed on OS maps. Triangulation pillar situated at the summit. |
| 94 | Picws Du | 3.000km | SN811218 | 160 | 12 | Y Mynydd Du | 749m | 93c | The Group name is also known by its English rendition of The Black Mountain. |
| 95 | Banc-y-llyn | 2.975km | SN804652 | 135/136/147 | 187/200 | Elenydd-Mallaen | 474m | 19c | Designated drop ascertained from the likelihood that the correct positioning of the bwlch is on lower ground when compared to the positioning of the 456m spot height at grid reference SN 802655 on the 2005 OS 1:25000 Explorer map numbers 187 and 200. Included in summit list due to contour configuration. |
| 96 | Cerrig yr Iwrch | 2.975km | SH825290 | 124/125 | 23 | Arennig | 472m | 17c | Spelling of Group name ascertained from 'A Gazetteer of Welsh Place-Names'. Group name spelt as Arenig on OS maps. Included in summit list due to contour configuration. |
| 97 | Pen y Fan | 2.975km | SO011215 | 160 | 12 | Bannau Brycheiniog | 886m | 671m | The Group name is also known by its English rendition of the Brecon Beacons. Probable older names for mountain were Artures Hille (Arthurs Hill), Bann Arthur, Moel Arthur and Arthur Cadahir (Cadair Arthur). Triangulation pillar once situated at the summit no longer exists. |
| 98 | Banc Dolwen | 2.950km | SN785786 | 135/147 | 213 | Elenydd-Mallaen | 530c | 18c | Included in summit list due to contour configuration. |
| 99 | Esgair Cerrig | 2.950km | SN956435 | 147/160 | 188 | Mynydd Epynt | 456m | 32c | Spelling of Group name ascertained from 'A Gazetteer of Welsh Place-Names'. Group name spelt as Mynydd Eppynt on OS maps. Esgair Cerrig is the locally known name for this hill. The hill is also named Gallows Hill on military maps. The hill is unnamed on OS maps. The summit is situated within the Sennybridge Artillery Range Training Area. |
| 100 | Garreg Las | 2.950km | SN777203 | 160 | 12 | Y Mynydd Du | 635m | 92c | The Group name is also known by its English rendition of The Black Mountain. Ancient summit cairns named Carnau'r Garreg Las. |
| 101 | Gorllwyn | 2.950km | SN917590 | 147 | 200 | Elenydd-Mallaen | 613m | 88c | Triangulation pillar situated at the summit. |
| 102 | Tywi Fechan | 2.950km | SN779606 | 146/147 | 187 | Elenydd-Mallaen | 545m | 34m | Tywi Fechan is the locally known name for the land the summit of this hill is situated on. |
| 103 | Banc y Merddwr | 2.925km | SH827359 | 124/125 | 18/23 | Arennig | 712m | 18c | Spelling of Group name ascertained from 'A Gazetteer of Welsh Place-Names'. Group name spelt as Arenig on OS maps. Included in summit list due to a rudimentary survey. |
| 104 | Y Dduallt | 2.900km | SH810273 | 124/125 | 23 | Arennig | 662m | 137c | Spelling of Group name ascertained from 'A Gazetteer of Welsh Place-Names'. Group name spelt as Arenig on OS maps. Spelling of mountain name ascertained from 'A Gazetteer of Welsh Place-Names'. Mountain name spelt as Dduallt on OS maps. |
| 105 | Carnedd Llechwedd-llyfn | 2.875km | SH857444 | 124/125 | 18 | Arennig | 643m | 25c | Spelling of Group name ascertained from 'A Gazetteer of Welsh Place-Names'. Group name spelt as Arenig on OS maps. |
| 106 | Craig Terfyn | 2.875km | SH667481 | 115 | 17 | Moelwynion | 672m | 60c | Craig Terfyn is the locally known name for this mountain. The mountain is unnamed on OS maps. |
| 107 | Great Rhos | 2.875km | SO182639 | 148 | 200 | Fforest Glud | 660m | 373c | The Group name is also known by its English rendition of the Radnor Forest. Triangulation pillar situated at the summit. |
| 108 | Mynydd Bychan | 2.875km | SN774923 | 135 | 23/215 | Pumlumon | 493m | 25c | The Group name is also known as Plynlimon, a rendition commonly used in both the Welsh and English language. Height of hill ascertained from the 1991 and 1998 OS 1:25000 Outdoor Leisure map number 23. |
| 109 | Pen yr Helgi Du | 2.875km | SH698630 | 115 | 17 | Carneddau | 833m | 85c | Height of mountain ascertained from the 2005 OS 1:25000 Explorer map number 17. |
| 110 | Rhyd y Meirch Uchaf | 2.875km | SN776625 | 146/147 | 187 | Elenydd-Mallaen | 504m | 16c | Named from bwlch situated northward of summit. The hill is unnamed on OS maps. Included in summit list due to contour configuration. |
| 111 | Yr Wyddfa | 2.875km | SH609543 | 115 | 17 | Yr Wyddfa | 1085m | 1039m | The older documented names for mountain were capud wedua vaur (Pen y Wyddfa Fawr) and Moel y Wyddfa. The mountain name is also known by its modernised Old English rendition of Snowdon (OE snaw, dun). Triangulation pillar and accompanying panoramic viewfinder situated at the summit. Large building (named Hafod Eryri) and railway terminus situated just below the summit. |
| 112 | Cefn Croes | 2.850km | SN808799 | 135/136/147 | 213/214 | Elenydd-Mallaen | 573m | 105c | Height of hill ascertained from the 1985 and 1986 OS 1:50000 Landranger map numbers 135,136 and 147. High mast situated at the summit. |
| 113 | Devil's Bridge | 2.850km | SS387877 | 159 | 164 | Penrhyn Gwyr | 30c | 20c | The Group name is also known by its modernised Old English rendition of Worm's Head (OE wyrm, heafod). The older Welsh names for the promontory are Ynysweryn, Pen-pryf and Pen Pyrod. The summit is situated on a tidal island. Devil's Bridge is one of only two summits in this list that are part of a tidal island that is connected to the Welsh mainland. |
| 114 | Waun Fach | 2.850km | SO215299 | 161 | 13 | Y Mynyddoedd Duon | 811m | 622c | The Group name is also known by its English rendition of The Black Mountains. Height of mountain ascertained from the 1984 OS 1:50000 Landranger map number 161. Only base of triangulation pillar once situated at the summit still remains. |
| 115 | Cadair Berwyn | 2.825km | SJ072327 | 125 | 255 | Y Berwyn | 827m | 19m | Triangulation pillar situated at the summit. |
| 116 | Carnedd y Filiast | 2.825km | SH871446 | 124/125 | 18 | Arennig | 669m | 317c | Spelling of Group name ascertained from 'A Gazetteer of Welsh Place-Names'. Group name spelt as Arenig on OS maps. Triangulation pillar situated at the summit. |
| 117 | Craig Berwyn | 2.825km | SJ071323 | 125 | 255 | Y Berwyn | 830c | 344c | Craig Berwyn is the locally known name for this mountain. Probable name of ancient cairn which is now used as a shelter and is situated just northward of the summit is Carnedd Fadyn. |
| 118 | Craig Gwr-helyg | 2.825km | SO054203 | 160 | 12 | Bannau Brycheiniog | 754m | 18c | The Group name is also known by its English rendition of the Brecon Beacons. Designated name taken from cliffs situated north-westward of summit. The cliffs are known locally as Gurelig Rocks (Craig Gwr-helyg). Although the mountain is unnamed on OS maps, the name Bwlch y Ddwyallt appears misleadingly closer to the summit of this mountain rather than at the correct bwlch position of grid reference SO 057205. Included in summit list due to contour configuration. |
| 119 | Foel Fras | 2.825km | SN765926 | 135 | 23/215 | Pumlumon | 529m | 102c | The Group name is also known as Plynlimon, a rendition commonly used in both the Welsh and English language. Spelling of hill name ascertained from a given example of a different hill with the same name in 'A Gazetteer of Welsh Place-Names'. Written as Foel fras on OS maps. Second hill of same map height situated southward of summit at grid reference SN 765920. Estimated prominence due to contour configuration of 30m between summits of same map height. |
| 120 | Mynydd Cae Goronwy | 2.825km | SH648229 | 124 | 18 | Rhinogydd | 642m | 21c | Mynydd Cae Goronwy is the locally known name for the land the summit of this mountain is situated on. The mountain is unnamed on OS maps. Included in summit list due to contour configuration. |
| 121 | Penllithrig-y-wrach | 2.825km | SH716623 | 115 | 17 | Carneddau | 799m | 180c | Spelling of mountain name ascertained from 'A Gazetteer of Welsh Place-Names'. Mountain name written as Pen Llithrig y Wrach on OS maps. Height of mountain ascertained from the 1989 OS 1:50000 Landranger map number 115. |
| 122 | Tapiau y Gell | 2.825km | SH927168 | 125 | 23 | Y Berwyn | 530c | 19c | Tapiau y Gell is the locally known name for this hill. The hill is unnamed on OS maps. Included in summit list due to a rudimentary survey. |
| 123 | Cribyn | 2.800km | SO023213 | 160 | 12 | Bannau Brycheiniog | 795m | 130m | The Group name is also known by its English rendition of the Brecon Beacons. |
| 124 | Foel Uchaf | 2.800km | SN768925 | 135 | 23/215 | Pumlumon | 520c | 24c | The Group name is also known as Plynlimon, a rendition commonly used in both the Welsh and English language. |
| 125 | Mynydd Dolgoed | 2.800km | SH796137 | 124 | 23 | Bryniau Dyfi | 576m | 22c | Mynydd Dolgoed is the locally known name for the land the summit of this hill is situated on. |
| 126 | Clogwyn Ucha | 2.775km | SH663485 | 115 | 17 | Moelwynion | 669m | 31c | Clogwyn Ucha is the locally known name for the crags situated eastward and adjacent to this mountains summit. The mountain is unnamed on OS maps. Height of mountain ascertained from the 1989 OS 1:50000 Landranger map number 115. |
| 127 | Esgair Saeson | 2.775km | SN794603 | 146/147 | 187 | Elenydd-Mallaen | 500m | 24c | |
| 128 | Ysgafell Wen | 2.750km | SH664487 | 115 | 17 | Moelwynion | 650c | 16c | Included in summit list due to a rudimentary survey. |
| 129 | Banc Bugeilyn | 2.725km | SN826924 | 135/136 | 214/215 | Pumlumon | 551m | 74m | The Group name is also known as Plynlimon, a rendition commonly used in both the Welsh and English language. |
| 130 | Diffwys | 2.725km | SH661234 | 124 | 18 | Rhinogydd | 750m | 148c | Triangulation pillar situated at the summit. |
| 131 | Foel y Geifr | 2.725km | SH716051 | 124 | 23 | Tarennydd | 515m | 32c | |
| 132 | Llwytmor | 2.725km | SH689692 | 115 | 17 | Carneddau | 849m | 73m | |
| 133 | Black Mixen | 2.700km | SO196644 | 148 | 200 | Fforest Glud | 650m | 45c | The Group name is also known by its English rendition of the Radnor Forest. Triangulation pillar situated at the summit. High mast and fenced off building situated next to the summit. |
| 134 | Bwa'r Llyn | 2.700km | SN798214 | 160 | 12 | Y Mynydd Du | 677m | 16c | The Group name is also known by its English rendition of The Black Mountain. Bwa'r Llyn is the locally known name for this summit in parts of the mountain range and also appears on the 1976 Ordnance Survey 1:25000 Outdoor Leisure map number 12. Designated name does not appear on current OS maps. Included in summit list due to a rudimentary survey. |
| 135 | Carn Nant-yr-ast | 2.700km | SN721494 | 146/147 | 187 | Elenydd-Mallaen | 440m | 76c | Triangulation pillar situated at the summit. |
| 136 | Cnapyn Pwll Boddi | 2.675km | SN809716 | 135/136/147 | 200/213 | Elenydd-Mallaen | 540c | 16c | Cnapyn Pwll Boddi is the locally known name for this hill. The hill is unnamed on OS maps. Included in summit list due to a rudimentary survey. |
| 137 | Erw y Ddafad-ddu | 2.650km | SH864233 | 124/125 | 23 | Aran | 872m | 37c | |
| 138 | Fan Brycheiniog | 2.650km | SN824220 | 160 | 12 | Y Mynydd Du | 802m | 424c | The Group name is also known by its English rendition of The Black Mountain. The summit of the mountain is named Twr y Fan Foel. Triangulation pillar and lower summit of same map height situated at grid reference SN 825218. |
| 139 | Graig Fach | 2.650km | SN821930 | 135/136 | 215 | Pumlumon | 514m | 17c | The Group name is also known as Plynlimon, a rendition commonly used in both the Welsh and English language. Included in summit list due to a rudimentary survey. |
| 140 | Gwryd | 2.625km | SN933397 | 160 | 188 | Mynydd Epynt | 453m | 21m | Spelling of Group name ascertained from 'A Gazetteer of Welsh Place-Names'. Group name spelt as Mynydd Eppynt on OS maps. Height of 454m on the 1985 OS 1:50000 Landranger map number 160. The summit is situated within the Sennybridge Artillery Range Training Area. |
| 141 | Moel Siabod | 2.625km | SH705546 | 115 | 18 | Moelwynion | 872m | 595m | Triangulation pillar situated at the summit. Ancient cairn situated on the summit area named Carnedd Moel Siabod. |
| 142 | Pen Creigiau'r Llan | 2.625km | SN745939 | 135 | 23 | Pumlumon | 507m | 84c | The Group name is also known as Plynlimon, a rendition commonly used in both the Welsh and English language. |
| 143 | Tarren Nantymynach | 2.625km | SH668025 | 135 | 23 | Tarennydd | 540c | 16c | Tarren Nantymynach is the locally known name for the land the summit of this hill is situated on. Included in summit list due to a rudimentary survey. |
| 144 | Foel Hafod-fynydd | 2.600km | SH877227 | 124/125 | 23 | Aran | 689m | 83c | |
| 145 | Rhobell Fawr | 2.600km | SH786256 | 124 | 23 | Arennig | 734m | 307c | Spelling of Group name ascertained from 'A Gazetteer of Welsh Place-Names'. Group name spelt as Arenig on OS maps. Triangulation pillar situated at the summit. |
| 146 | Esgair y Maesnant | 2.575km | SN832863 | 135/136 | 214 | Pumlumon | 504m | 28c | The Group name is also known as Plynlimon, a rendition commonly used in both the Welsh and English language. |
| 147 | Ffridd Ddu | 2.575km | SH726064 | 124 | 23 | Tarennydd | 430c | 16c | Included in summit list due to contour configuration. |
| 148 | Clipyn Du | 2.550km | SN799931 | 135 | 215 | Pumlumon | 582m | 123c | The Group name is also known as Plynlimon, a rendition commonly used in both the Welsh and English language. Clipyn Du is the locally known name for this hill. |
| 149 | Pembrey Forest | 2.550km | SN390021 | 159 | 164/178 | Mynydd Sylen | 25c | 18c | Height of summit ascertained from the 2001 OS 1:25000 Explorer map number 164. Other less remote points with the same map height are positioned south-eastward of summit. |
| 150 | Rhyd y Meirch Isaf | 2.550km | SN776629 | 146/147 | 187 | Elenydd-Mallaen | 502m | 17c | Named from bwlch situated southward of summit. The hill is unnamed on OS maps. Included in summit list due to contour configuration. |
| 151 | Carnysgubor | 2.525km | SM699246 | 157 | 35 | Ynys Dewi | 101m | 49c | The Group name is also known by its modernised Old Norse rendition of Ramsey (ON Hrafn, ey). Older Welsh names for the Group name are Ynys yr Hyrddod and Ynys Dyfannog. The summit is situated on an island. |
| 152 | Craig Portas | 2.525km | SH801141 | 124/125 | 23 | Bryniau Dyfi | 605m | 54c | |
| 153 | Darren | 2.525km | SN908568 | 147 | 200 | Elenydd-Mallaen | 524m | 21c | Included in summit list due to a rudimentary survey. |
| 154 | Pen y Graig Las | 2.525km | SN799871 | 135 | 213 | Pumlumon | 727m | 36m | The Group name is also known as Plynlimon, a rendition commonly used in both the Welsh and English language. The top of the cliffs situated north-westward and adjacent to this mountains summit are named Pen y Graig lâs on the 1788 Gogerthan Estate survey map for 'Nant-y-Llyn in Llanbadarn Fawr'. The mountain is unnamed on OS maps. |
| 155 | Cadair Idris | 2.500km | SH711130 | 124 | 23 | Cadair Idris | 893m | 608m | The summit of the mountain is named Pen y Gadair. Spelling of summit name ascertained from 'A Gazetteer of Welsh Place-Names'. The summit name is written as Penygadair on OS maps. Triangulation pillar situated at the summit. Roofed and open-doored mountain shelter situated just below the summit. |
| 156 | Carreg Amlwg | 2.500km | SH717549 | 115 | 18 | Moelwynion | 560c | 15c | Carreg Amlwg is the locally known name for this hill. The hill is unnamed on OS maps. Included in summit list due to a rudimentary survey. |
| 157 | Moel yr Eglwys | 2.500km | SH826366 | 124/125 | 18 | Arennig | 830c | 24c | Spelling of Group name ascertained from 'A Gazetteer of Welsh Place-Names'. Group name spelt as Arenig on OS maps. Moel yr Eglwys is the locally known name for this mountain. The name Moel yr Eglwys appears northward of this mountains summit on the 2005 OS 1:25000 Explorer map number 18. Included in summit list due to a rudimentary survey. |
| 158 | Mynydd Margam Isaf | 2.500km | SS819888 | 170 | 165/166 | Bryniau Cymoedd | 344m | 16c | Designated name used to differentiate between summits of same name. Triangulation pillar situated at the summit. Included in summit list due to contour configuration. |
| 159 | Rhinog Fawr | 2.500km | SH656290 | 124 | 18 | Rhinogydd | 720m | 362c | Triangulation pillar situated at the summit. |
| 160 | Tarren Cwm-ffernol | 2.500km | SH659023 | 135 | 23 | Tarennydd | 550c | 62c |