 The ski circuit of A' Mharconaich, Beinn Udlamain and Sgairneach Mhor is a classic route made popular by the close accessibility of the A9 road and the fact that the hills hold snow very well.Drainage from Beinn Udlamain goes to the east coast of Scotland either via Loch Ericht or the Allt Coire Dhomhain, both routes eventually join the River Tay.Beinn Udlamain is invariably ascended from the A9 road from near the summit of the Drumochter Pass at grid reference , which gives a starting altitude of 462 metres.