Trail Running calendar near Chalfont Saint Peter 2026-2027

A 50 mile coastal ultramarathon along the Essex saltmarshes, starting at South Woodham Ferrers Rugby Club and finishing at Maldon Promenade Park. Fully supported with aid stations, GPX route files, a shuttle option and a 15 hour cut off.

A community organised 10 km race at Imberhorne School featuring mixed terrain, marshals, chip timing and a sustainably sourced finisher medal supporting local charities.

Half marathon and 10 km races at RAF Greenham Common in Thatcham, Berkshire. The traffic free, flat course has water stations, free parking and a children's race paid on the day for £5; proceeds support New Life Special Care Babies.

An annual off road marathon from Salisbury to Winchester along the historic Clarendon Way, offering full, half, mini and relay options and organised by local Rotary clubs.

A guided 16k trail run at High Lodge in Thetford Forest led at a conversational pace with route guidance, trail running tips and an optional cool down. Terrain is mostly flat with a couple of small hills and parking costs £3.

The Phoenix Running - Slough will take place in Slough on Thursday 8 October 2026. You can run 5 miles.

A lap based Friday timed run on the Thames towpath offering distances from a single 3.28 mile lap up to ultra distances, with the ten pound charity entry supporting Rays of Sunshine and a special double sided medal.

Looped trail event near Maidstone offering 50 km, 25 km and 10 km options. The route follows the North Downs Way and River Medway and includes covered rest stops, GPS tracking and camping at basecamp.

A backyard ultra at Turvey House where runners complete a 4.167 mile (6.7 km) loop each hour; failing to start a loop on the hour means elimination. Entries include solo, paired teams alternating loops, and an 8 hour day cap.

An inflatable obstacle course event in Cheltenham on 10 October 2026 offering 2.5k to 15k distances, on course music, a finisher's medal and family friendly entry rules.

The Beat Box Hill 50k will take place in Tadworth on Saturday 10 October 2026. You can run between 21 and 50 kilometers.

A 10 lap ultra at Pippingford Park on 10 October 2026 with 3, 4 and 5 mile loop options, regular aid stations and close parking.

A half marathon and 10K through Epping Forest, London on 10 October 2026, run on marked woodland trails with aid stations, chip timing and an eco friendly focus.

A military style obstacle mud run at Hever Castle, Kent on 10 and 11 October 2026 with 3K, 6K and 12K courses plus a two hour survival experience.

Road and trail races in the Chiltern Hills on 11 October 2026 offering 5 km and 10 km routes with woodland paths, country lanes and notable climbs.

The Titsey Trail 10k is a community running event held on Sunday, 11th October 2026. Organized by runners for runners, it raises funds for a variety of local charities.

Fully marked trail races at Grafham Water on 11 October 2026 offering a 10k and a half marathon around the reservoir, with GPX routes, water stations, first aid cover, medals and prizes for top finishers.

Trail and fun runs near Old Basing on 11 October 2026 with chip-timed 10K and 6K races plus a 2K family fun run supporting local schools.

A single-lap 10K on 11 October 2026 around Burnham on Crouch, featuring sea wall coastal paths and countryside trails. The event is based at Dengie Hundred Sports Centre with free parking, facilities and post-run food and drink.

A functional fitness race at County Ground in Swindon on 11 October 2026 combining ten Xercises with repeated 400 m or 800 m running options in solo, doubles or relay formats.