Black Diamond Snowdon 24

View all races for Jul 2026

For solo runners, this is the ultimate endurance challenge requiring great physical and mental stamina. The current record is 8 laps - can you beat it? Being UTMB-indexed, this is also a great qualifying or preparation race for UTMB Mont Blanc. The individual challenges include a 50k, 100k, and 100m UTMB-indexed challenge.

Snowdon 24 can also be entered as a pair or team (up to 5). Taking part in a relay format, it's a fantastic and unique way for people to come together for 24 hours as friends, colleagues or teammates and work towards a shared goal, whether that's a number of ascents or just to keep going and raise money for charity. Every person in the team contributes, whether they make one ascent or ten.