Nuts Summer Colour Challenge

The Nuts Summer Colour Challenge is a mud obstacle race held at Henfold Lane in Dorking, Surrey. It is part of the Nuts Challenge, the UK’s original mud obstacle race. This summer OCR event offers 10K and 5K distances, designed for participants seeking mud, water, climbing, crawling, and a physical challenge beyond a standard road race. The course features a permanent obstacle site with over 100 natural and man-made obstacles, ensuring runners will get dirty and engage their entire bodies. While first-timers are welcome, experienced athletes also compete, as the format provides significant challenges. Sonia Hawkes is the listed organiser, and charity fundraising is facilitated through GoFundMe. Published results from past Summer Nuts Challenges confirm its ongoing race history.