Chilterns Trail Marathon

APR
17
2027
A guided 42.2 km trail run through the Chiltern Hills with qualified Run Leaders, checkpoints, mandatory trail shoes and a wooden finisher's medal.
Sat 17 Apr 2027
Marathon

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Chilterns Trail Marathon

The Chilterns Trail Marathon is a guided trail run covering 42.2 km (26.2 miles) through the Chiltern Hills. The route uses parts of the Ridgeway, local paths and trails, passes through nature reserves and Wendover Woods, and mixes technical single-track sections with more popular local routes. Wildlife on the route can include deer and red kites. The route profile includes rolling hills with about 500 m of ascent.

Participants are led by English Athletics qualified Run Leaders who handle navigation, offer technique tips and share information about the local area. Groups are organised by ability; participants should be able to run a half marathon on the flat in under 2.5 hours. Steeper sections are walked and trail shoes are mandatory.

Facilities at the event include toilets, bag drop and checkpoints. Refreshments are provided at up to three points along the route. The entry is limited to 40 participants. Included with entry are a Run Leader, a wooden Run the Wild finisher’s medal and a Trees not Tees certificate. Personal insurance, travel and parking are not included.

Access is via Tring Station, about a three minute walk from the Iron Room start location; paid parking is available at the station and there is limited free on-street parking. Spectator locations are provided to entrants in a pre-event briefing. Visit the organization's website for the most recent information.

Marathon
Chilterns Trail Marathon

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 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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