North Downs 50 Ultra Challenge
Guildford, United Kingdom • 1 Aug 2026
North Downs 50 Ultra Challenge
The North Downs 50 Ultra Challenge is a trail event based at a Guildford basecamp with looped and point to point route options on the North Downs Way and surrounding Surrey hills. The event offers multiple distances and route elevations, with support services and on-course facilities.
- 50 km loop : Loseley Park start and finish; ~830 m elevation
- 25 km loop : Loseley Park start and finish; ~530 m elevation
- 10 km loop : Loseley Park start and finish; ~230 m elevation
- ~24 km route : Loseley Park to Milton Court near Dorking; ~600 m elevation
Support includes covered rest stops roughly every 12.5 km with major stops at about 25 km and 50 km. Rest stops provide food, hot and cold drinks, medical provision, massage and self help blister supplies. The route is fully signed with GPS tracking available through an event app and a timing system that logs progress at rest stops.
There are camping and parking options, shuttle buses and transfers from nearby stations, a Solo Start option, a dedicated Ultra March category with qualifying targets for medals, and a Trailblazerz category for faster runners with time targets. Finishers receive a medal, a t shirt and a finisher meal. Discounts are available for younger participants. Visit the organization's website for the most recent information.