Rallye Epi d'Or is a one-day cycling event held annually in Saint-Cyr-l'École, west of Paris, typically in early October. Organized by Cyclo Club de Saint Cyr L'Ecole, it features a cyclotourist randonnée with three marked road distances: 50 km, 75 km, and 90 km. The routes are categorized by difficulty as green, blue, and red, allowing riders to select a shorter, less demanding ride or a longer cycling challenge.
The event commences in Saint-Cyr-l'École, with the local stadium serving as the official starting point. The entry fee is modest for licensed adult participants, while licensed youth riders can participate without charge, reflecting a club-rally atmosphere over a commercial sportive. The organizing club acknowledges participants on its website. Support for the event comes from local and cycling organizations, including FF Vélo, the Île-de-France regional committee, Codep 78, and the Saint-Cyr-l'École town hall.