Les Lucioles du Josas

Get ready to glow under the stars at the magical Fireflies of Jouy-en-Josas, taking place on December 12, 2026. This enchanting night race invites runners to light up the gentle forest landscape with their vibrant costumes and neon gear as they compete alongside Santa Claus in a festive atmosphere.
Choose between an 8 km or 12 km trail that winds through the serene woods of Yvelines, offering breathtaking views under the moonlight. The terrain is challenging yet rewarding, featuring numerous steps and climbs totaling 149 meters of elevation gain for the shorter distance and 220 meters for the longer route.
After crossing the finish line, savor the warmth of a Christmas market atmosphere complete with mulled wine and friendly faces. This event isn't just about running; it's an invitation to embrace the holiday spirit through sport and community.
Extend your visit by exploring nearby attractions such as the historic Palace of Versailles, just an hour’s drive away, where you can immerse yourself in French royalty history. Alternatively, take a peaceful stroll through Rambouillet Forest or indulge in art at Monet's House in Giverny. For those with a taste for local cuisine, Saint-Germain-en-Laye offers delightful culinary experiences.
Join the Fireflies of Jouy-en-Josas and illuminate your winter season with unforgettable moments and memories to cherish.
Enjoy a luminous adventure that captures the essence of Christmas magic!