North Downs 50 Ultra Challenge

AUG
1
2026
Explore the scenic North Downs from Loseley Park basecamp with 10 km, 25 km, 50 km or point to point routes across Surrey hills. Fully supported with regular aid stations, medical cover, GPS tracking and on site camping or rooms.
50 kilometers 25 kilometers 24 kilometers 10 kilometers

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Event overview

The North Downs 50 Ultra Challenge takes place on Sat 1 Aug 2026 from a Guildford basecamp. The event uses Loseley Park as the start and finish for the main loops. Routes run on the North Downs Way and Surrey hills and include looped and point-to-point options with varied countryside views.

Distances

  • 50 km - Guildford basecamp loop, ~830 m elevation
  • 25 km - Guildford basecamp loop, ~530 m elevation
  • 10 km - Guildford basecamp loop, ~230 m elevation
  • ~24 km - Loseley Park to Milton Court, near Dorking, ~600 m elevation

Logistics and support

The event provides covered rest stops approximately every 12.5 km, with meal stops about every 25 km. Food and drink at stops include hot drinks, water and energy drinks; lighter options are available for runners. Medical provision includes doctors, paramedics, first aiders, podiatrists and masseuses, plus a self-help area with blister plasters and tape. The route is fully signed and uses GPS tracking via the event app. Accommodation options include on-site camping and adjacent university-style rooms with en suite facilities (bookable extras). Shuttle buses, transfers and parking are available for participants and supporters. Entry options include self-fund and several charity funding tiers; self-fund registration fees listed for 2026 include £139 for the 50 km, £89 for 25 km and £39 for 10 km. Special categories include an Ultra March option for walkers and a Trailblazerz category for faster runners. Visit the organization's website for the most recent information.

50 km
50 Km Loop
25 km
25 Km Loop
24 km
24 Km Half Route to Dorking
10 km
10 Km Loop

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