Randos des 4 Jours de Dunkerque is a cycling randonnée connected to the Dunkerque race week. The Wizernes start provides 55 km and 75 km rides. These Wizernes routes begin at Salle du foyer Edouard Leducq, with an 8:30 AM departure, available GPX tracks, and moderate climbing: approximately 389 m of elevation gain for the 55 km route and 491 m for the 75 km route.
The larger randonnée day includes five starting locations in northern France: Dunkerque, Aire sur la Lys, La Chapelle d’Armentières, Merville, and Wizernes. Participants select varying distances based on their starting town, ranging from short 20 km rides from Aire sur la Lys to a 90 km option from Dunkerque. Merville and La Chapelle d’Armentières also offer walking routes. Cassel is the common rest stop for refueling. The event is organized with Octobre Rose, and a portion of the Dunkerque registration fee supports this cause.