Runaway Adventures - North Chilterns 50K

NOV
21
2026
A 50 km trail race from Putteridge Bury across the North Chilterns with ridgeline views, three aid stations, GPX route and an 8 hour 45 minute time limit.
Sat 21 Nov 2026
UTMB 50K 50 kilometers

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North Chilterns 50K

The North Chilterns 50K is a 50 km trail race held from Putteridge Bury Country House in Luton, Bedfordshire. The route covers approximately 798 m of elevation and follows local trails including sections of the Chiltern Way, Warden Hill, Barton and Pegsdon Hills. The course is fully marked and a GPX file is available for GPS devices.

The race has a maximum field of 250 runners, a time limit of 8 hours 45 minutes, and a minimum age of 20. It is licensed by the Trail Running Association and listed as a UTMB World Series index race. There are three on-course aid stations at 14.3 km, 28 km and 37.2 km providing water, cola, Precision Fuel & Hydration products, crisps, sweets and fresh fruit. Onsite facilities at the event base include indoor registration, toilets, coffee and a bag drop; free onsite parking is provided. Entries include chip timing with live results, a finishers medal and coursewide medical support.

Runners must carry required kit for the whole event, including a mobile phone with an emergency contact saved, route map on a phone or watch, waterproof jacket, headtorch, refillable hydration of at least 0.5 L, cash or card, warm hat and gloves and a foil blanket. The terrain is described as varied and undulating with several short climbs and softer ground likely in autumn. Visit the organization's website for the most recent information.

50 km
50k

Events nearby

Three evening trail time trials in the Chilterns on 23 Sep, 21 Oct and 25 Nov 2026, each around 8 km, marked and chip timed with mandatory head torch.
A Backyard Ultra in Welwyn Garden City where runners repeat a 4.167 mile loop each hour until one remains; entry includes drink vouchers and a commemorative pint glass.
Trail half marathon in the Chiltern Hills covering 13 miles with 300 m ascent, led groups, a midway refreshment point and a finisher’s medal.
A scenic approximate 15 km trail race around Tring and the Ashridge Estate with marshals, water stations, team prizes and a finisher snood.
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