Trail des Nerviens is a local trail-running event in Bavay, located in the Nord department of Hauts-de-France. The primary race covers 10 km, beginning at 10 AM, with reported elevation gains between 150 and 220 meters. A 5 km race, a free 400 m children's race, and a walking option with staggered starts from 8:30 AM are also available.
The event is organized by the Amicale des sapeurs pompiers de Bavay, the local firefighters' association. It is suitable for runners seeking a short local trail, accommodating walkers and younger participants. Changing rooms, refreshments, and a snack bar are available. Visitors can combine the race with a visit to the Forum Antique de Bavay, the largest archaeological site in northern France.