Nuclear Fallout

NOV
7
2026
A November muddy obstacle event in Brentwood Essex with 6 km, 12 km and 24 km plus options across farmland, woods and lakes featuring 40 to 200 plus obstacles.
Sat 7 Nov 2026
Fallout – 6k Fallout – 12k Fallout Oblivion Maxx – 2...

Always double-check with the organizer's website! This page may contain affiliate links.

Nuclear Fallout

Nuclear Fallout is a winter muddy obstacle event held in November at Nuclear Essex in Brentwood, Essex. The event runs over farmland, woodland, lakes and boggy terrain and features a mix of natural and man-made obstacles, including the signature Deathslide, the Travelator and a multi-lane zip wire into water.

Distances

  • 6 km course with 40+ obstacles
  • 12 km course made of two 6 km laps with 70+ obstacles
  • 24 km+ endurance course made of three 6 km laps with 200+ obstacles

Racers are chip timed and may tackle obstacles at their own pace; there are no penalties for skipping obstacles. Every finisher receives a medal and a free finishers photo. The event provides hot washdowns, changing facilities, buoyancy aids for water obstacles, free car parking, free bag drop and spectator access. An event village is located at the Secret Nuclear Bunker near the race site.

Participants should note that under 16 year olds must be accompanied by a paying participating adult. The course is described as varied in terrain and obstacles and is scheduled in November, offering a late season, muddy obstacle running experience on a permanent course in Essex. Visit the organization's website for the most recent information.

24 km
Fallout Oblivion Maxx – 24k+
12 km
Fallout – 12k
6 km
Fallout – 6k

Events nearby

Team cross country relays at Chingford Plain on 19 Sep 2026 with junior, senior and veteran races, limited entries and specific England Athletics eligibility and team rules.
A five mile trail run on 24 September 2026 at The Viper in Mill Green near Ingatestone. Limited to over 18s with a small field; participants must be self sufficient with phone and headtorch and a tail runner is on course.
Point to point runs from Central Park, Dartford along the River Darent with 5K, 10K and 18K options plus a finisher medal and post race refreshments.
A 25 km EcoTrail event in Bell Common, Epping on 3 October 2026, listed as part of the 2026 events calendar.
Add Event
Help us complete the calendar!
  • Distance is at least 5 km
  • Event has a website or Facebook page
Website
Optional: Please provide your e-mail address if we may contact you.
Report a change
We will only update the data if the information is also on the website.