From Capel Curig, take the footpath off the A5 through Bryn Trych Farm and follow it east before breaking off north after a footbridge towards the Crafnant Valley. Follow this for 1km - a keen eye will spot the crag appearing in the distance. Don't approach the crag directly over heathery ground, instead follow the path round and break off at a grassy field marked with a cairn. If you meet a stream and wooden gate you have gone too far.
From the Crafnant Valley, walk through the grounds of the Mynydd Climbing Club's hut, Blaen-y-Nant, and follow the main signposted track to Capel Curig. After a steep initial ascent, the path gently meanders down towards Capel Curig. After passing through a gate and over a stream walk approx. 80m before breaking off left at a grassy field marked with a cairn. If the path starts to veer south-westerly then you have gone too far.