Cnoc na Toinne is the 798th-highest mountain in Britain and Ireland on the Simm classification. Cnoc na Toinne's prominence qualifies it to meet the Arderin classification, and the British Isles Simm and Hewitt classifications. Cnoc na Toinne does not appear in the MountainViews Online Database, 100 Highest Irish Mountains, as the prominence threshold is over .