North Downs 25 km
- When
- Sat, Aug 1, 2026, 12:00 AM
- Where
- Guildford, GB
- Distances
- 10K · Marathon · Ultra Marathon
- Terrain
- TRAIL
- Price
- 15–375 GBP
- Elevation gain
- 830 m
- Typical weather
- Warm
- Organizer
- Action Challenge Ltd
About
The Guildford 10K at the North Downs 50 Ultra Challenge is a 10 km loop from Loseley Park on Saturday 1 August 2026, organised by Action Challenge / Ultra Challenge, exploring public footpaths around Littleton and the Loseley Estate to give a shorter, accessible taste of the North Downs trails from the same Guildford basecamp.