Schiehallion is a Munro of 1,083.3 m in Perth and Kinross. In the database's Loch Rannoch to Glen Lyon region it is the highest of 20 register hills, above Beinn a' Chreachain and 18 others.
The key col lies 37.7 km away to the south-west, at 367 m. It overtops all four of its nearest neighbours; the tallest of them, Carn Mairg, reaches 1,043 m. It shares its height of 1,083.3 m with Beinn a' Chaorainn (Aberdeenshire, Moray). On the Munros height ladder it sits between Beinn a' Chaorainn (Aberdeenshire, Moray) (1,083.3 m) and Beinn a' Chreachain (1,080.6 m). It falls on three OS 1:50,000 sheets, 42, 51 and 52.