Nuclear Fallout

NOV
7
2026
Nuclear Fallout is a winter obstacle race near Brentwood, Essex that winds through farmland, woods and lakes with mud, huge obstacles and plunging water. Choose 6 km, 12 km or the multi lap Oblivion and tackle the Deathslide, Travelator and multi lane zip wire.
Sat 7 Nov 2026
Fallout - 6k Fallout - 12k

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Event overview

Nuclear Fallout is a winter obstacle-course event held by Nuclear Races. The course uses farmland, woodland, lakes and muddy terrain and combines natural and man-made obstacles. Signature obstacles mentioned include a large Deathslide, a Travelator and a multi-lane zip wire into water. Races are chip-timed and every finisher receives a medal and a free finisher photo.

Race formats and key facts

  • 6 km - Age 14+, over 40 obstacles, chip-timed.
  • 12 km - Age 16+, over 70 obstacles, chip-timed, obstacles may be skipped without penalty.
  • 24 km+ (Oblivion) - Age 17+, lap race covering three 6 km laps, 70+ obstacles per lap, listed as Advanced.

Included event facilities and services: hot washdowns, changing facilities, buoyancy aids for water obstacles, free car park, free bag drop, and free spectator access. The 6 km and 12 km formats note that participants may walk, crawl or run at their own pace. The Oblivion format requires multiple laps and specifies competitive and non-competitive entry options with separate rules for competitive ranking and penalties.

Location and spectator information

The venue is at Nuclear Races in Brentwood, Essex. The site description notes an event village with music, food, drinks and merchandise for spectators. The location is described as around 15 minutes from major roads and nearby train or underground stations. Visit the organization's website for the most recent information.

12 km
Fallout - 12k
6 km
Fallout - 6k