North Downs 50 Ultra Challenge

Guildford, United Kingdom • 1 Aug 2026

The North Downs 50 Ultra Challenge is a trail running and trekking event set in the scenic Surrey Hills, starting and finishing at Loseley Park, Guildford. Participants can choose from 50km, 25km, or 10km looped routes that showcase the North Downs Way and surrounding countryside, offering varied terrain and stunning southern views. The event welcomes walkers, joggers, and runners of all experience levels, with full support including covered rest stops every 12.5 km, food and drink catering to all dietary needs, medical and massage teams, and GPS tracking.

Optional camping and university-style accommodation are available. Finishers receive a medal, T-shirt, and a celebratory meal. The event promotes camaraderie and personal achievement in a well-organized, accessible outdoor challenge. Visit the organization's website for the most recent information.

Race information

50 km
830 m+
50 Km Loop
25 km
530 m+
25 Km Loop
24 km
600 m+
24 Km Half Route to Dorking
10 km
230 m+
10 Km Loop
Visit the organization's website for the most recent information.
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