London
Trail Running Calendar near London 2026-2027
Explore the top trail runs near London for 2026-2027! We've gathered 237 exciting trail runs in the area. Check out our detailed list below to find your next local trail run.
June 2027
Timed event at Denbies Wine Estate on 20 June 2027 using a 1 mile loop; runners choose distances from 1 mile to ultra and run laps within a six hour limit.
Annual not for profit run organised by Istead & Ifield Harriers from Cyclopark through the Kent countryside with proceeds supporting local charities.
Women only trail event in Surrey offering 50 km, 25 km and 10 km routes from Denbies Vineyard with signed courses, aid stations and downloadable GPX maps.
July 2027
An 82 mile point-to-point ultramarathon from Epping to Harwich along mixed trail and road, with checkpoints, GPS tracking, a race medical team and a 24 hour cut-off.
A muddy 5km obstacle run at Wild Forest in Brentwood on 3 July supporting Essex Wildlife Trust, with safety teams, parking, showers and a medal for each participant.
Group guided 10 km trail run across the boardwalk and heathland of Thursley National Nature Reserve with evening and night options, car parking and a post-run alcohol-free beer.
A 24 hour multi terrain relay or solo race at Albyns Farm with teams of two to eight running repeated 5.75 mile laps and onsite camping and facilities.
A muddy 5k obstacle course at Fairlands Valley Park in Stevenage with staggered waves, on-site facilities, a minimum fundraising target of £50 and age 13 and over requirement.
Pretty Muddy 5k at Hylands Park Chelmsford on 18 July 2027 is a grass obstacle course with climb crawl and slide elements, staggered wave starts and a minimum age of 13.
ATW St Albans Summer 10K at Highfield Park on 18 July 2027 features a chip timed 10K, a free family fun run and an event village with refreshments and entertainment.
A Pretty Muddy 5k at Tilgate Park with obstacles on woodland and lakeside paths, a double lap course and a minimum age of 13.
A multi-format running festival at Blackland Farm on 24–25 July 2027 offering 24 hour and 12 hour solos, team relays, P24/P12 challenges, camping options, and finisher medals.
August 2027
Inflatable obstacle laps at Hylands Park Chelmsford on 7 August 2027 with 2.5 km to 15 km options, music zones, medals and on course water.
Timed looped trail at Denbies Wine Estate offering distances from a single 5.3 km loop up to ultramarathon within a seven hour limit, flexible start window and medal options.
London Backyard Ultra at Frylands Wood follows the Backyard Ultra format: run four miles each hour until one runner remains, scheduled for 28 August 2027.
Late August trail event in Windsor offering 10K and half marathon routes through Alexandra Gardens with views of Windsor Castle and support for Brain Research UK.