DEKA vs Nuclear Fit : distance, stations, prix et difficulté comparés (2026-27)

DEKA is a functional fitness race series run by Spartan Race and billed as the decathlon of hybrid fitness racing. Every DEKA event uses the same ten DEKA Zones. The time for each zone and the total time are recorded, so athletes can compare results with their own previous marks and with a global leaderboard.

The flagship DEKA FIT puts 500 m of running before each zone, for 5 km in total. DEKA MILE uses 160 m runs for one mile in total, and DEKA STRONG is the ten zones with no running. There are also DEKA Ultra (50 zones and 25 km of running) and DEKA ATLAS, a heavier ten-zone test with a 30-minute cap. Athletes who finish STRONG, MILE and FIT in one calendar year earn the DEKA Trifecta. Heats include Elite, Age Group, Teams and Ruck, so the series suits gym-goers as well as competitive 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.