Nuclear Fallout

Brentwood, United Kingdom • 7 Nov 2026

Nuclear Fallout

Nuclear Fallout is a winter obstacle race held at Nuclear Races in Brentwood, Essex. The event uses farmland, woodland, lakes and muddy terrain with a mix of natural and man made obstacles, including a notable 20 foot Deathslide and water features.

Three main formats are offered:

  • 6 km course, approx. 40+ obstacles, age 14+
  • 12 km course, approx. 70+ obstacles, age 16+
  • 24 km+ Oblivion MAXX, approx. 200+ obstacles, age 17+

The 6 km and 12 km options are chip timed and allow participants to walk, crawl or run at their own pace; there are no penalties for skipping obstacles on these distances. The Oblivion MAXX is a lap style endurance event with a larger obstacle total and specific competitive and non competitive entry arrangements. All three formats include amenities such as hot washdowns, changing facilities, buoyancy aids for water obstacles, free parking, a finishers medal and free finisher photos. Spectators are welcome and the event village provides viewing areas, food and merchandise.

Public transport access is described as approximately 15 minutes from Brentwood station or Epping Underground by train and taxi. The event page lists past results and course maps for reference. Visit the organization's website for the most recent information.

Race information

24 km
Fallout Oblivion Maxx - 24k
12 km
Fallout - 12k
6 km
Fallout - 6k
Visit the organization's website for the most recent information.
Trail runs nearby

Follow the 82 mile Essex Way trail from Epping tube station to the historic high lighthouse in Harwich. This ultra marathon features mixed terrain and 3,469 feet of elevation with full GPS tracking and five checkpoints.

Race 2 of the Orion Harriers Forest Five series takes place on 04 July 2026 at Jubilee Retreat as part of a three-race series with age-category aggregate trophies and prizes for individual and team placings.

Pretty Muddy 5k at Mote Park in Maidstone features a muddy obstacle course around the lake with some steep inclines. Participants aged 13 and over receive fundraising support, event materials and a medal on completion.

The The Bishop's Stortford Mitre 10k will take place in Much Hadham on Sunday 5 July 2026. You can run between 5 and 10 kilometers.

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