Tonelagee's prominence of , qualifies it was a Marilyn, and also ranks it as the 15th-highest mountain in Ireland on the MountainViews Online Database, 100 Highest Irish Mountains, where the minimum prominence threshold is 100 metres. Tonelagee's main boggy massif includes the northern subsidiary summit of Stoney Top , which has a prominence of that qualifies it as Vandeleur-Lynam; while its second major eastern subsidiary summit of Tonelagee NE Top , has a prominence of also qualifying it as Vandeleur-Lynam.