The Llanberis Path is the most popular and most forgiving route to the summit of Yr Wyddfa (Snowdon), Wales's highest mountain at 1,085 metres. It starts from the village and follows a clear, well-maintained track for 14.5 kilometres return, gaining around 970 metres of elevation. The gradient is steady rather than brutal, and anyone who is reasonably fit can complete it in five to six hours round trip.
The path runs alongside the Snowdon Mountain Railway for much of its length, which means the summit is never far away for those who need to bail out. On clear summer weekends it can be busy to the point of queuing near the top. Go early, go in the shoulder season (May or September), or choose one of the quieter routes — the Pyg Track from Pen-y-Pass or the Miners' Track — if crowds bother you. The summit café is open when the railway is running.