From the A830 road on the west side of the River Finnan the ascent route follows Glen Finnan until a stalkers path is picked up which leads onto the south east ridge of Sgùrr nan Coireachan. From this summit a traverse east along a rough ridge over two smaller summits is completed to reach Sgùrr Thuilm. The return to Glen Finnan can be achieved by descending south and then southwest down the Druim Coire a' Bheithe.