Trail Running calendar near London 2026-2027

A *10 km* out-and-back race through gravel paths and woodland at Weald Country Park in Brentwood, organised by MCC Promotions. The event includes on-day registration, water stations, prizes and supports the charity Sport In Mind.

A forest trail event at Wendover Woods offering a hilly multi-lap 10 km course with Half Marathon, 10k and Junior Run options, on-site facilities for spectators, route maps and GPX files, and medals plus free photos for participants.

An urban ultramarathon from a central London Run HQ with three distances including a 100km route that visits 100 plus landmarks. The event emphasises accessibility, on-course checkpoints, medals and a Top 100 finishers list.

A fully supported non stop 100 mile race along the South Downs Way with 12 aid stations, medical cover and a 30 hour cut off, running from the Winchester area to Eastbourne and featuring significant elevation and mostly trail terrain.

A 50 km non stop trail race along the South Downs Way inside the national park, with four aid stations, full medical support and a 9 hour cut off. The route starts at Matterley Bowl and finishes at Queen Elizabeth Country Park.

Race to the King is a trail ultramarathon at West Dean Gardens on 19 June 2027, offering 30 km and 50 km loop options plus 80 km and 100 km non stop circuits across the South Downs Way and Monarchs Way with timed results and support.

A muddy 5k obstacle course around The Common in Southampton where participants climb, crawl and slide through obstacles while raising funds for cancer research. Waves run every 15 minutes and participants must be 13 or older.

A point to point 50 mile ultra and a marathon along the Three Shires Way through Bucks, Beds and Northants, finishing with a Grafham Water loop. Licensed trail races with aid stations, electronic tracking and mandatory kit requirements.

A unique 24 hour running event at Caldecotte Lake where individuals and teams can complete as many 6.55 mile laps as they choose. Enjoy a festival atmosphere with on site camping and inclusive rewards for all participants.

Hydra 75 Mile Ultra is a 75 mile off road loop race at Denbies Wine Estate offering a single 1 mile lap, chip timing, and up to 30 hours to finish. Multiple distances and timed events take place on the same course.

A 100 mile off-road ultra at Denbies Wine Estate on 19 June 2027 using a flat one mile loop, full chip timing and multiple race options including 50 and 75 miles plus timed events.

A timed off-road Marathon and Half Marathon at Denbies Wine Estate near Dorking on a flat 1 mile loop with a flexible start window, up to 30 hours to finish, chip timing and a physical memento for all entrants.

A 24 hour attended challenge at Denbies Wine Estate in Dorking where runners complete 1 mile on the hour for 24 consecutive hours; onsite tent camping, daytime cafe service and a simultaneous virtual option are provided.

A 50 mile off-road ultra at Denbies Wine Estate on 19 June 2027 featuring a flat-ish one mile loop, chip timing and up to 30 hours to finish. Multiple timed and multi-distance options run alongside marathons and half marathons.

A timed endurance event at Denbies Wine Estate where participants run one mile on the hour for 12 consecutive hours. Attended and virtual options run simultaneously and places for the attended event are limited.

A trail running event at Cranleigh Showground on Saturday 19 June 2027 with routes from 5 km to 53 km across Surrey hills and forests. Fully marked courses, varied outposts, free parking and an event village with food and a non alcoholic be..

A timed trail weekend at Leybourne Lakes on a fully marked 2.5km loop with 6, 12 and 24 hour options plus relays. Race village offers basecamp space, live timing, medical support and finisher medals.

A 5k obstacle course at Trinity Park with muddy climbs, crawls and slides, held in staggered waves. The grassy course is fairly flat and the event requires participants to be 13 or older.

A scenic trail half marathon on National Trust land at Dunstable Downs covering 21.2 km and 450 m elevation. The fully marked course has two aid stations, GPX files available and event facilities at the National Trust centre.

Cock-a-doodle Dawdle is a lap-based trail event at Hyde Hall Farm on 26 June 2027 offering distances from 5 km to ultra marathon on a 5.3 km loop, with on-course aid, secure parking and finishers' medals.