Trail de Bruxelles

Trail de Bruxelles is a forest-based trail running weekend in the Zoniënwoud (Sonian Forest), one of the largest woodlands in Belgium and a classic green escape right next to Brussels. The event is built as a two-day outdoor sports festival: Saturday is dedicated to a 30 km challenge through the Zoniënwoud (with both run and walk options), and Sunday hosts the main Trail de Bruxelles with four running distances to choose from: 10 km, 15 km, 20 km, or 25 km.

What makes this race weekend appealing is the terrain and atmosphere. Expect a course that is more than 90% off-road, mostly inside the forest, where gravel paths and narrow singletracks alternate frequently. The Zoniënwoud is not flat, so you’ll meet short, punchy climbs along the way—enough to feel like a real trail run without being extreme mountain terrain. After finishing, the event hub at Centre ADEPS offers a relaxed, social finish area where runners can enjoy food, drinks, and a friendly post-race vibe.

Good to know before you plan: the weekend format lets you either pick one race day or make it a full trail weekend, and the organizers highlight strong participant feedback in recent editions. If you want a scenic, well-supported trail experience near Brussels with multiple distance options and a dedicated long Saturday route, Trail de Bruxelles is designed to fit a wide range of levels—from first-time trail runners to those looking for a longer forest challenge.