THIS IS THE NUTS CHALLENGE! Nuts is a 7-28k obstacle race in Surrey near London. You can run for charity, competitively or just for fun. The assault course is also available all year round and we run special obstacle race training sessions for the Nuts Challenge. The course is a muddy fun event whatever your level – either 7, 14, 21 or 28k!! If your feeling tough and have run the course before, why not sign up for Nuts Limitless – How many laps can you do? You will encounter mud, a water assault course, climbing, crawling and challenging obstacles all the way round – Nuts is guaranteed to be a once in a lifetime experience!