North Downs 50 Ultra Challenge
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North Downs 50 Ultra Challenge
The North Downs 50 Ultra Challenge takes place on Sat 31 July 2027 in the North Downs, Surrey, operating from a Guildford basecamp at Loseley Park. The event offers looped and point to point trail options and is open to walkers, joggers, and runners. There are event categories including Ultra March® for timed walkers, Ultra Trailblazerz® for faster runners, and a Solo Start option. Camping, transfers, parking and shuttle services are available.
Distances offered
- 50 km loop Start and Finish Loseley Park Guildford; ~830 m elevation
- 25 km loop Start and Finish Loseley Park Guildford; ~530 m elevation
- 24 km route Start Loseley Park Finish Milton Court near Dorking; ~600 m elevation
- 10 miles loop Start and Finish Loseley Park Guildford; ~280 m elevation
The event provides covered rest stops roughly every 12.5 km with larger stops at around 25 km and 50 km. Participants receive meals about every 25 km and hot and cold drinks at all stops. Medical staff, podiatrists and massage teams are available, and rest stops include seating, toilets, changing areas and baggage pickup. The route is fully signed with pink arrows and glow sticks for night sections, and an app provides GPS tracking and route maps; timing scans record progress at rest stops. Finishers receive a medal, t shirt, a photo finish and a hot food finishers meal. 2027 registration is open and charity and early bird options are listed for the series. Visit the organization's website for the most recent information.
