Mud Masters
Netherlands, Germany & Europe · Multiple venues
- Distance
- 6 km to 42 km options
- Obstacles
- Up to 80+ on longer courses
One of Europe's biggest obstacle run series, known for heavy mud and teamwork walls.
Choose the 12–18 km course for a solid intermediate challenge with lots of water and mud.
Official site →Tough Mudder 15K
United Kingdom & Europe · Multiple venues
- Distance
- 15 km
- Obstacles
- Around 25 obstacles
The classic Tough Mudder distance with tougher signature obstacles and plenty of cold water.
Endurance matters at 15 km, and obstacles get bigger, colder and higher.
Official site →Spartan Super
United Kingdom & Europe · Multiple venues
- Distance
- About 10 km
- Obstacles
- 25+ obstacles
The middle distance of the Spartan series, with more hills, carries and grip work.
Double the Sprint distance; you'll need running fitness and enough grip to avoid penalties.
Official site →Nuts Challenge
United Kingdom · South East England
- Distance
- 7 km laps (multi-lap options)
- Obstacles
- Over 100 per lap
A famously dense, wet and muddy course packed with ditches, ponds and wall climbs.
Short laps but extreme obstacle density and cold water — tests toughness more than speed.
Official site →Rat Race Dirty Weekend
United Kingdom · Burghley House, Lincolnshire
- Distance
- Around 20 miles
- Obstacles
- Around 200 obstacles
Billed as one of the world's biggest obstacle courses, held in the grounds of a stately home.
Obstacles are approachable but the distance demands real endurance training.
Official site →