East of England
Obstacle Race Calendar East of England 2026-2027
Monthly updates for East of England
Get new running races (and updates) in your inbox every month.
Explore the best obstacle runs in East of England for 2026-2027! Our updated list features 15 exciting races across the region. Find your next race in East of England below and join the running community at these great events!
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 muddy, hilly 3 mile loop in Friday Woods on 20 March 2027 with one to three laps and options to run, tab or take part in canicross; a 2 mile junior race is also held.
April 2027
Inflatable obstacle course event in Huntingdon with 2.5 km laps and distances to 15 km, five music zones, finisher medals and on course water.
A family-friendly inflatable obstacle course in St Albans on 24 April 2027 with multiple lap distances, music zones, and on-course hydration.
May 2027
A 5 km Pretty Muddy obstacle course at Norfolk Showground with a mix of paths and grass, staggered wave starts every 15 minutes and an age limit of 13 and over. The event supports fundraising for Cancer Research UK.
Monthly updates for East of England
Get new running races (and updates) in your inbox every month.
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.
June 2027
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.
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.
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.
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.
October 2027
Mud and obstacle course races at Wantisden Hall on 17 October 2027 offering 5 mile and 7 mile routes with 30+ and 40+ obstacles for ages 18 and over.