Trail Running calendar near Harwell 2026-2027

We have found 680 Trailruns within 80 miles of Harwell. See below where and when you can find the races.

Winter Runderland in Walton on Thames is a timed lap event on a 5.3 km riverside towpath course. Runners may select distances from 5 km up to ultra, and a lower-cost no-medal entry option is available.

January 2027

A trail event at Wenchford Picnic Site with seven hills over seven miles or the double 14-mile Immortal Sinner; forest trails may be muddy or icy and canicross waves are available.

A New Year trail race at Box Hill with an exact 10.000 km route, 473 m of ascent and rough tracks offering steep sections and wide views. Registration and parking are at Denbies Vineyard and headphones are not permitted.

A cross country meeting in Penshurst on 3 January 2027 offering a 5-mile race and a 5-mile canicross option on winter trails, organised by Penshurst Cross Country Run.

A 43 mile point to point ultra from Wendover to Little Venice in London combining trails, roads and canal towpath. The event includes real time GPS tracking, checkpoints, finishers medals and prizes for top finishers.

The Doughnut Dash is a flexible-distance run along a flat Thames riverside trail. Participants can run from a single lap to ultra marathon distances while enjoying doughnuts. All finishers receive a custom, neon-colored medal.

A winter trail run near Farley Mount offering two off road distances with chip timing, refreshments and a finisher medal. Routes feature tree lined sections, open views and a short climb on the longer course.

An offroad event at Pengethley Manor offering 5k, 10k, half, marathon and ultra options with a seven hour time limit. Race and virtual entries are available in January, with paid entries receiving themed medals.

A seven day offroad challenge at Pengethley Manor where runners or walkers choose daily distances from 5k to Ultra and earn a unique medal each day; a virtual option is available during January.

Trail event at Pengethley Manor offering 5k, 10k, half, marathon and ultra distances within a seven hour time limit. The offroad laps include a hill and vineyard sections and a virtual option with a personalised bib and medal is available.

Part of the 7 Deadly Sins series at Pengethley Manor, The Lusty Run offers offroad distances from 5k to Ultra with a seven hour completion limit. A virtual option during January includes a personalised virtual bib and recorded result.

Offroad lap-based event at Pengethley Manor offering 5k, 10k, half, marathon and ultra options with a seven hour time limit. A virtual January option, themed medals and on-site facilities are provided.

Part of the Seven Deadly Sins series at Pengethley Manor, this offroad event offers 5k, 10k, Half, Marathon and Ultra options on 2.5k laps with a seven hour time limit. A virtual option in January includes a personalised bib and medal after..

Part of the 7 Deadly Sins series, The Greedy Run is at Pengethley Manor on 16 January 2027. Runners choose 5k, 10k, half, marathon or ultra and must complete their chosen distance within seven hours on a tough off road lap course.

An off road event at Pengethley Manor offering 5k, 10k, half, full marathon and ultra distances with a seven hour limit. Virtual entries and themed medals are available.

A six hour loop event at Ryton Pools Country Park on a 3.3 mile crushed stone route around pools and pasture. Participants run as many laps as they wish within six hours; canicross and rucking are permitted and a portion of entries supports..

A trail half marathon and 10K in Moors Valley Country Park, Dorset, run on gravel woodland paths with lap-based routes and limited canicross places. The event is chip timed, fully marked and follows several eco-friendly measures.

A muddy, hilly cross-country event around May Hill in Gloucestershire on 30–31 January 2027, offering a main 7–9 mile route, a longer 14–15 mile Mayhem option, and a canicross category.

Trail races at Queen Elizabeth Country Park in the South Downs offer three distances through woodland, the South Downs Way and gravel tracks, with chip timing, water stations and a finisher medal.

A twilight out and back trail in Hurn Forest offering 5 mile and 10 mile options. The event uses 2.5 mile laps, provides aid at the start and finish, and donates 20% of entry fees to Forestry England.

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