02.05.2026
BIG Roc Marathon
What is the BIG Roc Marathon?
The Roc Marathon is a certainty on our programme… but for some of our participants it isn’t challenging anymore. And because the beautiful locations in the region are countless, we proudly present you also this year the BIG Roc Marathon.
This 91km course is an extraordinary challenge and only for the experienced mountainbiker. New parts are added and your physical and technical skills will be tested thoroughly.
IMPORTANT: make sure to read the regulations concerning the different start hours and the conditions to participate!
Program
BIG Roc Marathon (Saturday 2 May 2026)
| Startwave | Start hour |
| Wave 1 | 8u00 |
Participation package
Included:
- ROC d’Ardenne finisher t-shirt
- free insurance (helmet is compulsory, participants without helmet are not insured)
- 5 provisions at the checkpoints, including sports drinks, water, fruit and snacks
- Professional electronic timing
- technical service
- Medical assistance
- Professionally signposted route
- Secured bike park
- Free bike wash
- Changing rooms and showers
- A tasty Chouffe at the finish
*Provisions only if you show the official tag!
Course
We will announce the detailed course here shortly. The GPX files will be available just before the event.
Supplies
5 feed zones will be provided for the BIG Roc Marathon. The organization will provide sufficient drinks and food for all riders.
These feed zones are accessible with a car without crossing the courses so that spectators or teams can get there.
Rules & regulations
- The Big Roc Marathon will be ridden with a timing chip and a start in waves. The time per rider is calculated according to the net-time principle (from the moment you cross the starting carpet until you finish).
- Minimum age: 19 years old
- In case you take part in the Big Roc Marathon with an e-bike, you will be timed but you will not appear in the rankings.