The Randonnée des Terres Froides is a one-day cycling and walking event based in Le Grand-Lemps, Isère, France. Riders have several road options, typically between 50 and 90 km, with climbing from about 540 m to nearly 1,300 m, making it a hilly cyclotourist ride rather than a flat speed day. Walkers can choose short routes of about 8 and 12 km. Registration is straightforward and local; adult licensed riders pay a small fee, and young licensed participants are free.
Cyclo Loisir de la Bièvre organizes the event, which can attract a few hundred participants; one reported edition had 309. The routes depart from Le Grand-Lemps into the Terres Froides area of northern Isère, where the rolling countryside defines the ride: steady distance, repeated elevation, and no need for race tactics. The road courses are usually offered in three levels, from a blue-rated middle-distance ride to a harder red-rated long route, suitable for club riders, regular recreational cyclists, and walkers at this local gathering.