Trail du Viaduc is a short trail race in Trégrom, Côtes-d’Armor, Brittany. Typically held in mid-March, it provides two distances, 8 km and 16 km, allowing participants to select a brief off-road run or a more extended challenge.
The race, now in its tenth edition, is organized by the local Trail du Viaduc association. Its course highlights the Brittany landscapes and offers views of the Côtes-d’Armor countryside near Trégrom. The event is suited for runners seeking a concise trail experience, distinct from a large urban race.