Chiltern Ridge Classic 50k

APR
17
2027
A 50K trail ultra along the Ridgeway in the Chiltern Hills, starting at Berkhamsted Castle and finishing in Wendover, with three checkpoints and a 9 hour limit.
Sat 17 Apr 2027
UTMB 50K 50 kilometers

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About the race

50K trail ultramarathon through the Chiltern Hills, held on 17 April 2027. The route follows Ridgeline trails and sections of the Ridgeway National Trail, starting from Berkhamsted Castle and finishing at Hampden Meadow in Wendover. The course passes Ashridge, Ivinghoe Beacon, Aldbury, Coombe Hill and Whiteleaf Hill and includes undulating terrain, ancient woodlands and rolling hills. The published elevation gain is 996m+ and the current route is slightly long at about 51 km due to local path closures.

The event is limited to 400 runners, requires a minimum age of 20 and is licensed by the Trail Running Association under UKA rules. Navigation is fully marked with orange signage and marshals at key points; runners must also carry a digital GPX route on a watch or phone as a backup. A GPX file and route maps are provided.

There are three full checkpoints at about 14.3 km, 29.6 km and approximately 42 km. Checkpoints contain water, electrolyte drink and gels from Precision Fuel & Hydration, snacks, flapjacks and fresh fruit; satellite water points may be added in hot weather. The race has a 9 hour time limit, course medical cover, chip timing with live results, finishers medal and race photos. Coach transfers are available pre and post event.

Required kit includes a mobile phone, route GPX plus paper map, light jacket or emergency blanket, refillable hydration (min 0.5 L), collapsible cup and payment method. 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 Henley basecamp trail event with looped options of 50 km, 25 km and 10 km, covered rest stops, GPS tracking, medical support, camping and finish-line hospitality.
Trail run in Bisham, Marlow on 27 September 2026 with Half Marathon, 10k and 1k routes along the Thames and through woodland.
Thames Valley LDWA challenge walk in Marlow on 4 October 2026 offering 25 km, 40 km and 50 km routes with checkpoints, mandatory kit and entry limits.
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