ENGRunningTrail10mi · 16.1 km / 10.0 mi24K · 24 km / 14.9 mi25K · 25 km / 15.5 mi50K · 50 km / 31.1 mi

North Downs 50 Ultra Challenge

Guildford, Surrey · ENG

Next race day

Sat, 31 Jul 2027

4 distances · see start times below

About North Downs 50 Ultra Challenge

North Downs 50 Ultra Challenge is a running event in Guildford, Surrey, England. Recorded disciplines include 10mi, 24K, 25K, 50K. The listed surface is trail. The listed organiser is Action Challenge. The next listed date is 31 July 2027. Check the organiser's information for entry and race-day arrangements.

Dates, starts & entry

Times are local to the race. Select the entry route for your distance.

10mi · 16.1 km / 10.0 mi
Sat, 31 Jul 2027
Start time not yet confirmed
Entries open
Check race website
Supported trail challenge open to runners, joggers and walkers. Distances are approximate; start venues and waves vary by route. Select your route and start wave with the organiser.
Edition source
24K · 24 km / 14.9 mi
Sat, 31 Jul 2027
Start time not yet confirmed
Entries open
Check race website
Supported trail challenge open to runners, joggers and walkers. Distances are approximate; start venues and waves vary by route. Select your route and start wave with the organiser.
Edition source
25K · 25 km / 15.5 mi
Sat, 31 Jul 2027
Start time not yet confirmed
Entries open
Check race website
Supported trail challenge open to runners, joggers and walkers. Distances are approximate; start venues and waves vary by route. Select your route and start wave with the organiser.
Edition source
50K · 50 km / 31.1 mi
Sat, 31 Jul 2027
Start time not yet confirmed
Entries open
Check race website
Supported trail challenge open to runners, joggers and walkers. Distances are approximate; start venues and waves vary by route. Select your route and start wave with the organiser.
Edition source

Location & race day

Listed venue / area

Guildford, SurreyENG

Find this location on a map

Confirm the exact start line, parking and arrival instructions with the organiser. A listed town or postcode may cover a wider area.

About the race

Supported trail challenge open to runners, joggers and walkers. Distances are approximate; start venues and waves vary by route. Select your route and start wave with the organiser.