L’ASSAUT MOSAN Marathon 2026

The Assaut Mosan is the unmissable VTT & Gravel experience since 2018. For the 2026 edition, expect 5 loops with different characteristics, including over 6 km of completely new trails and passages through a quarry. The event offers various routes: a Rando VTT from 25 to 66 km with 320m to 1000m of elevation gain, a Marathon VTT of 96 km and 1500m of elevation gain, and two Gravel routes of 49 or 70 km. There's also a Family Tour of 15 km with fun activities. The event takes place in the heart of the Meuse Valley (Namur and Andenne regions), with a master loop that is fluid and accessible, crossing varied landscapes. Participants can expect exceptional and generous refreshments, technical assistance, bike wash, secure bike parking, BBQ, bar, friendly atmosphere, safety marshals, massage stands, showers, toilets, and an infirmary.