Trail Holnon is a small trail-running series in Holnon, Aisne department, organized by Team Holnon. It offers two trail courses for runners opening their season, plus a 7 km walk for those who want the same local event without racing the trails.
The trail races are run in complete self-sufficiency, requiring runners to carry what they expect to use on the course. The organizer provides a full aid station at the finish. This event is on its ninth edition.