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

HYROX is an indoor fitness race in which athletes run 1 km and then complete one functional workout station, repeated eight times. The stations and their order are fixed: 1,000 m SkiErg, 50 m sled push, 50 m sled pull, 80 m burpee broad jumps, 1,000 m row, 200 m farmers carry, 100 m sandbag lunges and 100 wall balls. Because the format is the same worldwide, results feed global leaderboards and a World Championship at the end of each season.

HYROX launched in Hamburg, Germany, in 2017 and is run by HYROX World GmbH. It was created by race organiser Christian Toetzke with Olympic medallist Moritz Fürste and marketing expert Michael Trautmann. Races take place in large exhibition halls, with start waves throughout the day. Divisions include Open, Pro (heavier weights), Doubles and a four-person Relay. There is no time cap and no qualification needed for age-group entry, so HYROX suits first-time racers as well as competitive hybrid athletes.

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.