London
Obstacle Race Calendar near London 2026-2027
Monthly updates for London
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Explore the top obstacle runs near London for 2026-2027! We've gathered 17 exciting races in the area. Check out our detailed list below to find your next local race.
October 2026
A relaxed Halloween-themed 3 km obstacle run on a new course with waves of participants, mandatory headtorch, on-course burpee penalties, and optional costumes.
November 2026
Nuclear Fallout at Nuclear Essex hosts winter muddy obstacle races over 6 km, 12 km or a 24 km endurance format with dozens to hundreds of obstacles across farmland and woodland.
March 2027
A 5 km obstacle mud run on 6 March 2027 at Henfold Lakes near Dorking offering one, two or unlimited laps and entries for teams, charities and solo runners.
A quirky running event in Dorking where pairs carry an adult over a 380 m out and back course with obstacles, a weigh in, helmet requirement and novelty prizes.
April 2027
A family-friendly inflatable obstacle course in St Albans on 24 April 2027 with multiple lap distances, music zones, and on-course hydration.
Monthly updates for London
Get new running races (and updates) in your inbox every month.
May 2027
Muddy obstacle races at the Secret Nuclear Bunker Estate in Brentwood, Essex, offering 6 km and 12 km courses plus family and junior waves with signature obstacles like the Deathslide.
Inflatable obstacle course in Guildford on 8 May 2027 offering 2.5K, 5K, 10K and 15K routes with music zones, inflatables and a finisher's medal.
Inflatable 5K at Brands Hatch in Kent offers 2.5k laps with 15 to 90 obstacles across distances, plus family and group options, music zones, a finisher medal and on site facilities.
June 2027
A 5k obstacle course at Royal Windsor Racecourse with mud obstacles to climb, crawl and slide, mixed tarmac and grass surfaces, staggered wave starts and a minimum age of 13. Earlybird entry prices and a fundraising target apply.
A muddy 5k obstacle course at Cassiobury Park where participants climb, crawl and slide through timed waves while raising funds for cancer research.
Race for Life Basildon on 19 June 2027 at Gloucester Park offers 3k and 5k courses around park lakes with accessible facilities and a minimum fundraising target.
July 2027
A 5 km outdoor obstacle and mud course in Brentwood on 3 July 2027 that raises funds for Essex Wildlife Trust; entry is £40 with a suggested £100 fundraising pledge.
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.
A Pretty Muddy 5k at Tilgate Park with obstacles on woodland and lakeside paths, a double lap course and a minimum age of 13.
August 2027
Inflatable 5K Chelmsford at Hylands Park on 7 August 2027 features repeated 2.5 km laps of inflatable obstacles with distances from 2.5 km to 15 km, medals and music zones.
September 2027
A family-friendly muddy obstacle run in Brentwood, Essex offering 5 km and 1.5 km routes, on-course obstacles, finish-line facilities and an event village.