ATHX vs Tough Mudder: distance, stations, price & difficulty compared (2026-27)
ATHX has 37 upcoming events in 14 countries (entry €94–€275, $129–$269 +3 currencies); Tough Mudder has 20 upcoming events in 5 countries (entry $50–$429, A$119–A$275). Data from 57 event listings, updated daily.
Verdict
ATHX: 3 timed workouts in a 2.5 h session. Tough Mudder: outdoor mud run, 5K–15K, 13–30 obstacles. Entry: ATHX €94–€275, $129–$269 +3 currencies; Tough Mudder $50–$429, A$119–A$275. Both are rated Intermediate. ATHX has more upcoming events (37 in 14 countries vs 20 in 5 countries).
2.5-hour hybrid fitness test: strength, endurance and MetCon zones
Team-focused mud and obstacle courses: 5 km and 15 km formats
Key differences
- FormatATHX: 2.5-hour continuous competition across 6 zones: 3 scored workouts (Strength, Endurance, MetCon X) separated by warm-up, refuel and recovery zonesTough Mudder: Team-oriented outdoor mud and obstacle run
- Running / distanceATHX: Run/row intervals inside the 30-min Endurance zone (2026: Lite 500 m, ATHX 750 m, Pro 1 km; 22-min cap); no running between workoutsTough Mudder: 5K · 10K · 15K
- Stations / obstaclesATHX: Strength 20 min (1RM strict press, 3RM back squat, 5RM deadlift) · Endurance 30 min (run + row) · MetCon X 30 min (7 stations, 25-min cap)Tough Mudder: 5K: 13 · 10K: 20 · 15K: 30 obstacles
- DivisionsATHX: ATHX Lite (pairs only), ATHX, ATHX Pro; solo or pairs (same-sex or mixed)Tough Mudder: Individual or team entry
- DifficultyATHX: IntermediateTough Mudder: Intermediate
- Entry price (upcoming events)ATHX: €94–€275, $129–$269 +3 currenciesTough Mudder: $50–$429, A$119–A$275
- VenueATHX: Indoor exhibition and convention centresTough Mudder: Outdoor mud course
- Upcoming eventsATHX: 37 events in 14 countriesTough Mudder: 20 events in 5 countries
ATHX vs Tough Mudder side by side
Format facts from the organisers: athxgames.com, athxgames.com, athxgames.com, uk.toughmudder.com. Event counts and prices from race.fitness listings.
Next ATHX races
- ATHX Amsterdam 2026 · 7 Nov 2026
- ATHX Los Angeles 2026 · 7 Nov 2026
- ATHX Finals 2026 · 27 Nov 2026
Next Tough Mudder races
- Tough Mudder Melbourne 2027 · 13 Feb 2027
- Tough Mudder Austin · 27 Feb 2027
- Tough Mudder Los Angeles · 20 Mar 2027
What is ATHX?
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.
What is Tough Mudder?
Tough Mudder is an obstacle course event series founded in 2010 by Will Dean and Guy Livingstone, with its first event in Pennsylvania, USA. It has been owned by Spartan Race since 2020. Events are held mainly in the United States and Canada, with regional editions in the UK and other countries.
The main formats are Tough Mudder 5K, with 12 or more obstacles, and Tough Mudder 15K, with 20 or more obstacles over a 15 km course. Infinity events and the World's Toughest Mudder are 8, 12 and 24-hour endurance challenges. Signature obstacles include Arctic Enema, Mudderhorn and Electroshock Therapy. Tough Mudder is built around teamwork rather than finishing times, and most participants sign up as a team. The 5K suits newcomers and groups, while the 15K and endurance formats call for solid running fitness and upper-body strength.
Frequently asked questions
What is the difference between ATHX and Tough Mudder?
ATHX: 2.5-hour continuous competition across 6 zones: 3 scored workouts (Strength, Endurance, MetCon X) separated by warm-up, refuel and recovery zones (running: Run/row intervals inside the 30-min Endurance zone (2026: Lite 500 m, ATHX 750 m, Pro 1 km; 22-min cap); no running between workouts). Tough Mudder: Team-oriented outdoor mud and obstacle run (running: 5K · 10K · 15K).
Is ATHX harder than Tough Mudder?
Both are rated Intermediate, so neither is clearly harder on paper. The tests differ, though: ATHX is 3 timed workouts in a 2.5 h session; Tough Mudder is outdoor mud run, 5K–15K, 13–30 obstacles. How hard either feels depends on the division you enter: ATHX offers ATHX Lite (pairs only), ATHX, ATHX Pro; solo or pairs (same-sex or mixed); Tough Mudder offers Individual or team entry.
How many ATHX and Tough Mudder races are coming up?
Race.Fitness lists 37 upcoming ATHX events in 14 countries (United States, United Kingdom, Germany, Portugal, France) and 20 upcoming Tough Mudder events in 5 countries (United States, United Kingdom, Australia, Germany, Canada).
Is ATHX or Tough Mudder cheaper to enter?
Entry prices for upcoming events: ATHX €94–€275, $129–$269 +3 currencies; Tough Mudder $50–$429, A$119–A$275. Prices vary by division, ticket wave and country.
When is the next ATHX or Tough Mudder race?
The next ATHX event is ATHX Amsterdam 2026 on 7 Nov 2026. The next Tough Mudder event is Tough Mudder Melbourne 2027 on 13 Feb 2027.
Which is better for beginners, ATHX or Tough Mudder?
Both ATHX and Tough Mudder need a base of running and strength fitness. Check each event’s divisions: most offer an open or team option that is easier than the pro or elite level.