Ultra Challenge North Downs 50
Fifty or twenty-five kilometres of the Surrey North Downs on loops from Guildford.
| Distance | Ascent | Per km |
|---|---|---|
| 50km | 830 m | 17 m |
| 25km Loop | 530 m | 21 m |
| 25km to Dorking | 600 m | 24 m |
| 10 Mile | 280 m | 17 m |
Nobody has reviewed this one yet
No reviews of the North Downs 50, and nothing on what people wore. Both are things no organiser publishes and every runner wants before they enter — how it actually went, and what was on your feet.
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Pick your distance
Start time not confirmed yet — check with the organiser.
What you’re in for
A 50km loop from Loseley Park outside Guildford, out along the North Downs Way towards Dorking and back, with about 830m of climb on the organiser's figures. A 25km loop from basecamp, a 25km first half that finishes at Milton Court by Dorking, and a ten-mile. End of July, all in daylight. An Ultra Challenge event, which means walkers, joggers and runners on the same course, signed with pink arrows and glow sticks after dark, with a covered rest stop every twelve kilometres or so — food, drink, medics, toilets — and a bigger one every twenty-five. Runners can enter with a target time; most of the field will be walking.
Terrain and trail
North Downs Way: chalk and sandy track along the ridge, beech and yew woodland, short steep pulls up onto the Downs and views south over the Weald. Dry and firm in July. Signed. A road shoe with tread.
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Other races near here
North Downs races →Races from other organisers starting within 30 km of Guildford Basecamp, Surrey, nearest first.
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How to enter
Sat, 31 Jul 2027 · Entries open
Enter on their website ↗Entries are handled by Ultra Challenge, not by us. We take nothing for sending you there.
Add to your calendar · as an all-day entry, until the start time is confirmed
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Common questions
- The North Downs 50 offers 4 distances: 50km (31.1 miles), 25km Loop (15.5 miles), 25km to Dorking (15.5 miles), 10 Mile (16.1 km).