Bidein a' Choire Sheasgaich (Scottish Gaelic: Bidean Coire an t-Seasgaich)[7] is a remote mountain in the Northwest Highlands of Scotland.

[13] The summit it guarded by crags to the north and east but there is a straightforward approach via Sail Riabach a kilometre or so to the southwest.

[14] Bidein a' Choire Sheasgaich and Lurg Mhòr are, according to Cameron McNeish, "two of the lonliest Munros in the land"[15] An approach can be made from the north, the east or the west.

All the approach routes are long and arduous but, if a two-day expedition is planned, three open bothies are available as an alternative to wild camping.

[note 4][17][18] Even if using a mountain bike the expedition is, according to Dan Bailey "a single epic trip, which can be undertaken either as an appealingly brutal one-day assault or a slower overnighter".