The gentlest way onto the ridge is from Thackthwaite in the Vale of Lorton. A footpath leads away from the settlement climbing to the intake wall. Beyond is a drove road, curving up the hillside to emerge at the top of Sourfoot Fell. The ridge from here is easy. An alternative start is from the Mosser road, climbing Darling Fell before joining the main ridge. Wainwright also suggests following Crabtree Beck for a direct ascent of Low Fell.