Trail Running calendar near Grafham Water 2026-2027

Join this flexible timed event along the flat River Thames towpath in Walton on Thames. Complete as many laps as you like over seven hours to achieve distances from 5km to an ultra marathon.

A five mile autumn trail run in Mill Green on 24 Sep 2026 with limited entry for over 18s. The event is self sufficient, route is anti-clockwise and a head torch and phone are required.

A 50 km looped trail event from a Henley basecamp through Chilterns countryside, with 25 km and 10 km options. The event offers camping, a Saturday meal, covered rest stops, medical and massage support, GPS tracking and a finishers medal an..

A last person standing backyard ultra at The Waggoners pub in Welwyn where runners complete a 4.167 mile loop every hour until a single runner finishes a loop alone. Pub facilities, an athletes menu and limited marquee space are available.

A timed multi lap event on 26 September 2026 in Walton on Thames combining a flat 5.3 km out and back riverside course with a cake themed aid station, multiple distance options and a seven hour time limit.

Introduced in 2026, a 12 mile trail race in National Trust Clumber Park on 26 September 2026. The route is fully marshalled with water stations and finishers receive a medal, water and banana. Minimum age 17 and a three hour cut off.

A forest marathon and a 20 mile short course around Henley-in-Arden, Warwickshire, starting and finishing at the Memorial Hall, with staffed checkpoints and a hot meal at the finish.

A community running event at Harcourt Hill on 26 Sep 2026 featuring a predominantly off road 10k plus 3k and 1k options, water points, medals for all and prizes for top male and female finishers.

Experience an autumn run through scenic pumpkin fields and farm tracks in Colchester. With 10k, 5k, and 1k distances, this flat off road event features chip timing and a family friendly event village.

A mixed-surface trail event on 27 September 2026 along the Wensum Way offering fixed distances from 10 km to ultra, parking included, an aid station at base camp, bespoke finisher medals and a complimentary coffee and cake at the finish.

A BM fell race around Wirksworth covering 13.7 km with 457 m of ascent, run on varied quarry, trail and pasture terrain under FRA licence. The route includes steep climbs, Harborough Rocks and views toward Carsington Water.

Run Sandringham on 27 September 2026 features a Half Marathon, 5K and Community Mile around the Sandringham Estate. The event includes chip timing for the Half and 5K, water stations, medical support and on site parking.

Two measured runs through farmland beside Grantchester near Cambridge, with chip timing and medals for all finishers. The event supports Maggie's and Addenbrooke's Charitable Trust and includes on site services and team prizes.

Experience a scenic off road run through the fields surrounding Manuden with distances of 10k, 5k, and 1k. Enjoy locally organized routes with course water stations and finisher medals for all participants.

A MacTuffX London functional fitness race on 27 September 2026 combining ten Xercises with repeated runs. Options include Solo, Doubles, and Relay entries across Classic (10 x 400 m) and 2X (10 x 800 m) distances; entrants must be 18 or old..

A charity hike or run on Sunday 27 September 2026 around Charnwood, starting and finishing at Beacon Hill Country Park. The route is about 16 miles and visits Beacon Hill, Bardon Hill and Old John to raise funds for local people in need.

A multi terrain trail event near Marlow offering a Half Marathon, 10k and 1k along the Thames and through countryside. Entries include chip timing, a finisher medal and refreshments, and every entry plants a tree.

A six hour lap-based trail event at Coombe Abbey Park near Coventry, using a 3.3 mile loop through woodland and meadow. Options include a medal or a tree token, rucking is allowed and dogs are not permitted.

A night trail 10k at Coombe Abbey Park requiring a head or chest torch, with varied off road terrain, Petzl demo kit, on course refreshments in biodegradable cups, and charity and tree planting options.

A timed track event in Walton on Thames on 2 October 2026 offering 6, 12 and 24 hour formats with chip timing, 400 m laps and distance options from 5 km up to 100 mile equivalents. The track is limited to 100 runners at once.