Wielemie Run & Walk Geraardsbergen is a 50 km ultramarathon in Geraardsbergen, Belgium. The 2026 edition takes place on 6 September 2026.
Autumn brings the most slip-prone trails of the year — wet leaves over roots and rock — plus a real chance of wind and rain, so grip and a rain layer matter.
For a full picture of the terrain, seasons and race culture, see our guide to ultramarathons in Belgium.
The 50K is the classic first ultra: long enough that marathon habits stop working, short enough to finish on marathon fitness plus discipline. The race is usually decided by pacing in the first two hours — start at a pace that feels almost embarrassingly easy, walk the steeper climbs from the very beginning, and you will pass people all afternoon.
Fuelling is the other difference from road racing. Aim for regular intake from the first hour onwards — most runners land between 40 and 80 grams of carbohydrate per hour — and practise it in training, because after three hours your stomach, not your legs, is most often what slows you down.
Find the best accommodations near the start line in Geraardsbergen.
Search on Booking.comThe event is scheduled for 6 September 2026. Always confirm the date on the official registration page before making travel plans, as organisers occasionally reschedule.
The race distance is 50 km.
The event is based in Geraardsbergen, Belgium. Exact start location and time are published by the organiser — check the registration page for details.
Registration runs through the organiser’s official page, linked above. Popular Benelux ultras can sell out, so if this race is on your calendar it pays to register early.