- Date
- 11 – 13 June 2027
- Location
- Vijfhuizen (Haarlemmermeer), North Holland, Netherlands
- Category
- Obstacle run
- Distances
- 3 km to marathon (42 km); Family Edition on the last day
- Organiser
- Mud Masters
- Website
- mudmasters.com/nl/event/haarlemmermeer
Mud Masters Haarlemmermeer is an obstacle run in Vijfhuizen (Haarlemmermeer), North Holland, Netherlands. The event takes place on 11 – 13 June. It is organised by Mud Masters.

Distances and format at Mud Masters Haarlemmermeer
At Mud Masters Haarlemmermeer you can choose from the following distances or formats: 3 km to marathon (42 km); Family Edition on the last day. An obstacle run combines running with obstacles such as walls, cargo nets, crawls, water crossings and mud pits. Most events offer several distances, so beginners and experienced athletes can both find a challenge, and many people take part as a team.
How to prepare for Mud Masters Haarlemmermeer
Most people who enjoy an obstacle run prepared in two ways: running and grip strength. Build up to running the distance you entered comfortably, ideally on trails or grass rather than only on the road, because the courses are rarely flat or smooth. Add pull-ups, dead hangs, farmers carries and burpees two or three times a week; walls, rigs and monkey bars mostly test your grip and upper body.
Practise getting back into a running rhythm straight after a climb or a crawl, because that is where most time is lost. Train in the shoes you will race in. Trail shoes with deep lugs and good drainage work best on wet grass and mud, and avoid cotton clothing, which gets heavy when it is wet.
Plan the day itself as well. Arrive early enough to collect your start number, park and find the start area without rushing. Bring dry clothes, a towel, a bag for wet or muddy gear and something to eat and drink after the finish. Check the information from the organiser for start times, waves, parking, the minimum age and what is included in your ticket.
All details and registration for Mud Masters Haarlemmermeer can be found on the website of the organiser. Looking for more events? Browse the full OCR calendar Europe with obstacle races, survival runs and fitness races in every European country.
