Sgùrr na Banachdaich is one of the main summits on the Black Cuillin ridge. Like the rest of the range it is composed of gabbro, a rock with excellent grip for mountaineering.
This is one of the easiest of the main Black Cuillin peaks to ascend. The simplest route ascends via Coire nan Eich from Glen Brittle. Hands are unlikely to be required until the summit is reached, though there is much steep ground and scree.
Other routes require more scrambling ability, including the excellent ridge running out to Sgùrr nan Gobhar (Grade 1/2) which is fairly straightforward but best used for descent. In both directions, the main Cuillin ridge requires moderate scrambling; the continuation southwards towards Sgùrr Dearg is rated Grade 2, and the NE ridge towards Sgùrr Thormaid is a Grade 3.