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Ireland's 100 Most-Prominent Summits

This list of Ireland's most-prominent summits has been 100% derived from the Irish Marilyns. A Marilyn is a summit in the UK or Ireland of any height with a topographical prominence of at least 150 metres. This page focuses on the 100 most-prominent Marilyn summits in Ireland as originally listed by the late E.D. ‘Clem’ Clements.
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Ireland's 100 Most-Prominent Summits is the first Irish hill list where the top-100 summits are presented in order of prominence. This list was originally published right here on The Ireland Walking Guide website on 17th February 2024.

Since E.D. ‘Clem’ Clements’ death a Legacy Committee has been formed to safeguard all his hill related documents, which also include his hill lists, with the co-custodian responsibility for the Irish Marilyns now being with Myrddyn Phillips and David Purchase.

We would like to thank Myrddyn and David for agreeing the inclusion of Clem's list on The Ireland Walking Guide website and for supporting the creation of this hillwalking challenge.

Mountain and hill summits offer great walking opportunities all year round, however we particularly recommend visiting them during months when the days are longest. For this reason, we promote upland walking as our monthly theme for June.

#JuneUplandWalk

All-Ireland map
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​Each marker on the map represents the location of one of Ireland's 100 Most-Prominent Summits. Click on a marker for further information about that location. All the summit locations marked on this map have also been listed in height order below.
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Listed by prominence
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Summit name (elevation) Prominence Irish Grid Reference Upland area
Carrauntoohil (e.1,039m) 1,039m V:804:844 MacGillycuddy's Reeks
Brandon Mountain (e.952m) 927m Q:460:116 Dingle Mountains
Lugnaquillia Mountain (e.925m) 849m T:032:918 Wicklow Mountains
Slieve Donard (e.850m) 825m J:358:277 Mourne Mountains
Galtymore Mountain (e.918m) 821m R:878:238 Galtee Mountains
Mweelrea (e.814m) 778m L:790:668 Mweelrea Mountains
Nephin (e.806m) 768m G:103:080 Standalone mountain summit
Mount Leinster (e.794m) 726m S:827:525 Blackstairs Mountains
Barrclashcame (e.772m) 706m L:849:695 Sheeffry Hills
Croaghaun (e.688m) 688m F:560:061 West Achill Hills
Errigal Mountain (e.751m) 685m B:928:208 Derryveagh Mountains
Benbaun (e.729m) 682m L:786:539 The Twelve Bens
Knockmealdown (e.793m) 678m S:058:084 Knockmealdown Mountains
Slieve Carr (e.721m) 648m F:915:145 Nephin Beg Range
Baurtregaum (e.851m) 642m Q:750:077 Slieve Mish Mountains
Slievenamon (e.721m) 642m S:298:307 Slievenamon Hills
Croagh Patrick (e.764m) 638m L:906:802 Croagh Patrick Hills
Binn idir an dá Log (e.702m) 629m L:888:528 Maumturk Mountains
Kilclooney Mountain (e.792m) 628m S:317:105 Comeragh Mountains
Ben Gorm (e.700m) 612m L:862:652 Ben Gorm Mountains
Knockboy (e.706m) 609m W:004:620 Shehy Mountains
Maumtrasna (e.682m) 608m L:961:637 Partry Mountains North
Keeper Hill (e.694m) 607m R:824:667 Silvermine Mountains
Cuilcagh (e.665m) 605m H:124:280 Cuilcagh Hills
Slieve Snaght (e.615m) 600m C:424:390 Central Inishowen Hills
Purple Mountain (e.832m) 593m V:887:852 Purple Mountains
Birreencorragh (e.698m) 583m G:025:050 Nephin Beg Range
Slievemore (e.671m) 582m F:650:087 West Achill Hills
Mangerton Mountain (e.838m) 580m V:980:808 Mangerton Mountains
Sawel Mountain (e.678m) 580m H:618:973 Sperrin Mountains
Knocknadobar (e.690m) 565m V:506:845 Doulus Head Hills
Truskmore (e.647m) 560m G:759:473 Dartry Mountains Northwest
Corranabinnia (e.716m) 540m F:903:032 Nephin Beg Range
Blackstairs Mountain (e.735m) 537m S:811:448 Blackstairs Mountains
Garraun (e.598m) 536m L:767:610 Garraun Hills
Croaghgorm (e.674m) 522m G:948:896 Bluestack Mountains
Croghan Mountain (e.606m) 520m T:131:729 Croghan Hills
Mullaghanattin (e.773m) 514m V:739:773 Dunkerron Mountains Southwest
Trostan (e.550m) 510m D:180:236 Antrim Hills
Slieve Foye (e.589m) 507m J:169:120 Cooley Mountains
Slieve Aghkerane (e.541m) 504m L:778:961 Corraun Hills
Stumpa Dúloigh (e.784m) 494m V:787:794 Dunkerron Mountains Northeast
Beenoskee (e.826m) 492m Q:581:089 Dingle Mountains
Moylussa (e.532m) 486m R:651:756 Slieve Bearnagh Mountains
Muckish (e.666m) 481m C:004:287 Derryveagh Mountains
Knockalongy (e.544m) 477m G:504:275 Ox Mountains
Slieve League (e.595m) 475m G:544:784 Southwest Donegal Hills
Coomacarrea (e.772m) 474m V:611:826 Glenbeigh Mountains
Bunnacunneen (e.575m) 463m L:939:577 Partry Mountains South
Knockmore (e.462m) 462m L:669:862 Clare Island Hills
Mount Eagle (e.516m) 458m V:335:989 West Dingle Hills
Slieve Gullion (e.573m) 454m J:025:203 Slieve Gullion Hills
Brandon Hill (e.515m) 448m S:697:403 Brandon Hills
Musheramore (e.644m) 437m W:329:850 Boggeragh Mountains
Slieve Croob (e.534m) 436m J:319:454 Dromara Hills
Buckoogh (e.588m) 426m F:995:017 Nephin Beg Range
Arroo (e.523m) 426m G:833:521 Dartry Mountains Northeast
Arderin (e.527m) 420m S:232:989 Slieve Bloom Mountains
Minaun (e.466m) 420m F:661:020 East Achill Hills
Binn Mhór (e.661m) 408m L:918:494 Maumturk Mountains
Raghtin More (e.502m) 404m C:339:456 Urris Hills
The Paps East (e.694m) 402m W:133:855 Derrynasaggart Mountains Northeast
Tountinna (e.457m) 402m R:737:773 Arra Mountains
Hungry Hill (e.685m) 400m V:761:498 Caha Mountains Southwest
Slieve Snaght (e.678m) 400m G:923:148 Derryveagh Mountains
Knockoura (e.490m) 393m V:621:463 Slieve Miskish Mountains
Knocklayd (e.514m) 392m D:115:363 Antrim Hills
Carrane Hill (e.458m) 391m G:844:207 Arigna Mountains
Aghla Mountain (e.593m) 390m G:896:988 Bluestack Mountains
Crohane (e.650m) 388m W:050:829 Mangerton Mountains
Bolus (e.410m) 388m V:399:635 Bolus Head Hills
Crockauns (e.463m) 386m G:760:410 Dartry Mountains Southwest
Seefin Mountain (e.528m) 383m R:644:181 Ballyhoura Mountains South
Divis (e.478m) 380m J:281:755 Belfast Hills
Knocklomena (e.641m) 379m V:797:766 Dunkerron Mountains Northeast
Mullaghcarn (e.542m) 378m H:510:809 Sperrin Mountains
Croaghmoyle (e.430m) 378m M:098:983 Croaghmoyle Hills
Slievetooey (e.511m) 377m G:628:899 Southwest Donegal Hills
Mullaghcleevaun (e.849m) 372m O:068:070 Wicklow Mountains
Aghla Beg (e.602m) 369m B:965:246 Derryveagh Mountains
Slievecallan (e.391m) 368m R:144:773 Southwest Clare Hills
Caherbarnagh (e.681m) 364m W:192:872 Derrynasaggart Mountains Northeast
Nephin Beg (e.627m) 364m F:932:102 Nephin Beg Range
Leenaun Hill (e.618m) 359m L:874:593 Maumturk Mountains
Loughsalt Mountain (e.469m) 354m C:133:265 West Milford Hills
Benlevy (e.418m) 354m M:050:549 Partry Mountains South
Foilclogh (e.497m) 350m V:508:745 Carhan Horseshoe
Slieve Binnian (e.746m) 349m J:320:234 Mourne Mountains
Devilsbit Mountain (e.480m) 344m S:058:744 Devilsbit Hills
Bessy Bell (e.420m) 342m H:390:820 Standalone summit
Boleybrack (e.449m) 341m G:931:322 Dartry Mountains Southeast
Shehy More (e.546m) 340m W:151:600 South Cork Hills
Castlequin (e.361m) 338m V:470:820 Doulus Head Hills
Slieve Rushen (e.404m) 336m H:234:226 Standalone summit
Lissoughter (e.401m) 336m L:859:495 Standalone summit
Keadeen Mountain (e.653m) 335m S:953:898 Wicklow Mountains
Maghera (e.400m) 332m R:518:911 Slieve Aughty Mountains West
Slieve Gallion (e.527m) 331m H:798:878 Sperrin Mountains
Knockowen (e.658m) 330m V:809:554 Caha Mountains Northeast
Knocknacappul (e.639m) 330m V:834:767 Dunkerron Mountains Northeast

Ireland's 100 Most-Prominent Summits

  1. Carrauntoohil (p.1,039m / e.1,039m)
  2. Brandon Mountain (p.927m / e.952m)
  3. Lugnaquillia Mountain (p.849m / e.925m)
  4. Slieve Donard (p.825m / e.850m)
  5. Galtymore Mountain (p.821m / e.918m)
  6. Mweelrea (p.778m / e.814m)
  7. Nephin (p.768m / e.806m)
  8. Mount Leinster (p.726m / e.794m)
  9. Barrclashcame (p.706m / e.772m)
  10. Croaghaun (p.688m / e.688m)
  11. Errigal Mountain (p.685m / e.751m)
  12. Benbaun (p.682m / e.729m)
  13. Knockmealdown (p.678m / e.793m)
  14. Slieve Carr (p.648m / e.721m)
  15. Baurtregaum (p.642m / e.851m)
  16. Slievenamon (p.642m / e.721m)
  17. Croagh Patrick (p.638m / e.764m)
  18. Binn idir an dá Log (p.629m / e.702m)
  19. Kilclooney Mountain (p.628m / e.792m)
  20. Ben Gorm (p.612m / e.700m)
  21. Knockboy (p.609m / e.706m)
  22. Maumtrasna (p.608m / e.682m)
  23. Keeper Hill (p.607m / e.694m)
  24. Cuilcagh (p.605m / e.665m)
  25. Slieve Snaght (p.600m / e.615m)
  26. Purple Mountain (p.593m / e.832m)
  27. Birreencorragh (p.583m / e.698m)
  28. Slievemore (p.582m / e.671m)
  29. Mangerton Mountain (p.580m / e.838m)
  30. Sawel Mountain (p.580m / e.678m)
  31. Knocknadobar (p.565m / e.690m)
  32. Truskmore (p.560m / e.647m)
  33. Corranabinnia (p.540m / e.716m)
  34. Blackstairs Mountain (p.537m / e.735m)
  35. Garraun (p.536m / e.598m)
  36. Croaghgorm (p.522m / e.674m)
  37. Croghan Mountain (p.520m / e.606m)
  38. Mullaghanattin (p.514m / e.773m)
  39. Trostan (p.510m / e.550m)
  40. Slieve Foye (p.507m / e.589m)
  41. Slieve Aghkerane (p.504m / e.541m)
  42. Stumpa Dúloigh (p.494m / e.784m)
  43. Beenoskee (p.492m / e.826m)
  44. Moylussa (p.486m / e.532m)
  45. Muckish (p.481m / e.666m)
  46. Knockalongy (p.477m / e.544m)
  47. Slieve League (p.475m / e.595m)
  48. Coomacarrea (p.474m / e.772m)
  49. Bunnacunneen (p.463m / e.575m)
  50. Knockmore (p.462m / e.462m)
  51. Mount Eagle (p.458m / e.516m)
  52. Slieve Gullion (p.454m / e.573m)
  53. Brandon Hill (p.448m / e.515m)
  54. Musheramore (p.437m / e.644m)
  55. Slieve Croob (p.436m / e.534m)
  56. Buckoogh (p.426m / e.588m)
  57. Arroo (p.426m / e.523m)
  58. Arderin (p.420m / e.527m)
  59. Minaun (p.420m / e.466m)
  60. Binn Mhór (p.408m / e.661m)
  61. Raghtin More (p.404m / e.502m)
  62. The Paps East (p.402m / e.694m)
  63. Tountinna (p.402m / e.457m)
  64. Hungry Hill (p.400m / e.685m)
  65. Slieve Snaght (p.400m / e.678m)
  66. Knockoura (p.393m / e.490m)
  67. Knocklayd (p.392m / e.514m)
  68. Carrane Hill (p.391m / e.458m)
  69. Aghla Mountain (p.390m / e.593m)
  70. Crohane (p.388m / e.650m)
  71. Bolus (p.388m / e.410m)
  72. Crockauns (p.386m / e.463m)
  73. Seefin Mountain (p.383m / e.528m)
  74. Divis (p.380m / e.478m)
  75. Knocklomena (p.379m / e.641m)
  76. Mullaghcarn (p.378m / e.542m)
  77. Croaghmoyle (p.378m / e.430m)
  78. Slievetooey (p.377m / e.511m)
  79. Mullaghcleevaun (p.372m / e.849m)
  80. Aghla Beg (p.369m / e.602m)
  81. Slievecallan (p.368m / e.391m)
  82. Caherbarnagh (p.364m / e.681m)
  83. Nephin Beg (p.364m / e.627m)
  84. Leenaun Hill (p.359m / e.618m)
  85. Loughsalt Mountain (p.354m / e.469m)
  86. Benlevy (p.354m / e.418m)
  87. Foilclogh (p.350m / e.497m)
  88. Slieve Binnian (p.349m / e.746m)
  89. Devilsbit Mountain (p.344m / e.480m)
  90. Bessy Bell (p.342m / e.420m)
  91. Boleybrack (p.341m / e.449m)
  92. Shehy More (p.340m / e.546m)
  93. Castlequin (p.338m / e.361m)
  94. Slieve Rushen (p.336m / e.404m)
  95. Lissoughter (p.336m / e.401m)
  96. Keadeen Mountain (p.335m / e.653m)
  97. Maghera (p.332m / e.400m)
  98. Slieve Gallion (p.331m / e.527m)
  99. Knockowen (p.330m / e.658m)
  100. Knocknacappul (p.330m / e.639m)

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