ATHX vs True Grit: distancia, estaciones, precio y dificultad comparados (2026-27)

ATHX is a UK-born hybrid fitness competition, co-founded by coach Ollie Marchon, that now runs events across the UK, Europe and the United States. Each ATHX event is a continuous 2.5-hour session across six zones. Every competitor completes the same three workouts: a Strength zone (20 minutes), an Endurance zone (30 minutes) and a MetCon X zone (30 minutes). These are separated by a warm-up zone, a refuel zone and a recovery zone. The workouts and movement standards are published for each season.

Athletes enter as singles or pairs, in an ATHX or a harder ATHX PRO category, and pairs can be same-sex or mixed. Season results lead to the ATHX Finals, held in Lisbon in 2026. The fixed rest periods and clear divisions make ATHX accessible to first-timers, while the strength element suits athletes who lift as well as run and row.

True Grit is an Australian-owned obstacle course race created by members of the Australian special forces and designed for everyday Australians. Events have been held in New South Wales, Queensland, Victoria, South Australia and Western Australia; upcoming races include Melbourne (Wildwood) and Sydney (Lower Portland).

The main courses are Half Grit, about 5 km, and Full Grit, about 10 km, with military-inspired obstacles that involve running, crawling and climbing through mud and water. The brand has also run 15 km and 30 km events and a 24-hour enduro in NSW. Minimum ages are 12 for Half Grit and 16 for Full Grit. Runners can enter solo, including a dedicated wave for solo entrants, or as gym and group teams, with a group discount for teams of ten or more. The organisers say it suits racers of all ages and fitness levels, with the 10 km course being the tougher test.