Battle Cancer vs Nuclear Fit: distance, stations, price & difficulty compared (2026-27)

Battle Cancer is a fitness fundraising event series in which athletes raise money for cancer charities and compete in hybrid fitness challenges. Since 2019, the organisers say, more than 100,000 athletes have taken part in events across over 15 cities, including London, Glasgow, Dublin, Paris, Berlin, Barcelona, Dubai, Singapore and Miami.

The main Battle Cancer Challenge is a 90-minute event for teams of four (male, female or mixed). Teams rotate through nine stations in three zones, Endurance, Burn and Power, working five minutes of maximum reps followed by four minutes of rest at each. Hybrid 3|20 is a format for individuals or pairs: three minutes of work per station across nine stations, then a 20-minute maximum-distance run. Both formats have a Challenge division that allows movement modifications and a stricter Compete division. Money raised counts as points on the leaderboard, so it suits groups who want a sociable team event with a charity goal.

Nuclear Fit is an outdoor hybrid fitness race run by Nuclear Races at its obstacle course site near Brentwood, Essex. Instead of an indoor track, athletes run six 1 km trail loops, each including two 4 ft hurdles, and complete a fitness station after each loop in a central arena called The Core.

The stations use farm-themed equipment: a tyre flip, a farmers urn hug, a plough pull, a milk churn carry, a sandbag duck-and-throw and a squat-and-lift, with separate loads for men and women. Categories include singles, doubles and mixed doubles, plus a three-person relay in which each member completes two runs and two stations, and a Pro wave with longer station distances. Waves start every 10 minutes, chip timing records each run and station split, and there is a 2-hour time limit. It suits runners and gym-goers who want a hybrid race on trails rather than indoors.