Choose from 6km/12km or Oblivion 42km course distances over ultra-gritty, muddy, obstacle-loaded farmland set in the heart of the Kelvedon Hatch Secret Bunker Estate.

Nuclear is well known for delivering award winning events with big, high quality man-made obstacles designed to challenge and test every ability of fitness on fast-paced, flowing, punishing courses over epic natural, varied terrain.

Course layout is never the same, so the Nuclear experience is always crammed with surprises and exhilaration.

We’re different at Nuclear.  Expect unexpected twists, turns, a sense of humour and the unknown.

Taking part in Rush is challenging however you don’t have to be super-fit and you can enter as a team or individually. Camaraderie from the #nuclearfamily will make sure you reach the finish line no matter what your fitness ability. Be prepared to have fun and to find your fire!

Onslaught is for the fastest & fittest over the main 6k or 12k course. It’s the first wave of the day with limited spaces & the opportunity to win cash prizes.