The Fireflies of Josas 2026

We hope you’ve been well-behaved this year, because Santa Claus 🎅 won’t be far from chasing you along the tracks of the Fireflies of Josas, before his big annual tour... 🎁 It’s in December, during the Christmas market in Jouy-en-Josas, that you’ll line up for the start of this night race 🌙 promising an extraordinary experience. The Fireflies of Josas is the race where fireflies compete with shooting stars 💫. Whether you choose the 8 km or 12 km trail, you’ll run while lighting up the gentle forest landscape of the Yvelines, so make sure you choose your costume carefully to shine bright! 💡 Yes, little firefly, to shine, nothing beats neon! The dress code is stabilo 🖍️. At the very least, there’s no way we’ll lose you in the darkness! 😉

Here there’s climbing 🧗, lots of steps to tackle, routes through places as unusual as they are 😍, mulled wine 🍷, and a friendly atmosphere put together with great care 🧅. On the agenda: 149 mD+ for the 8 km race and 220 mD+ for its big sister! Little ones 👶, as well as grown-ups, are invited to this sporty and warm event in this month of sharing. If that isn’t Christmas magic... 🎄

After the race, take advantage of your visit to explore local wonders 🌍. Just an hour’s drive 🚗 away, you can visit the famous Palace of Versailles ⚜️, a true treasure of French history 🇫🇷 and a unique chance to walk in the footsteps of Louis XIV 🤴. For a more relaxing nature moment, the Rambouillet Forest 🌳 welcomes you for a peaceful hike or a simple picnic 🥖. Fancy a slightly more cultural getaway? Discover Monet’s House in Giverny, where you’ll dive into the fascinating world of the master of Impressionism 🖼️. And for food lovers, why not enjoy a romantic dinner in Saint-Germain-en-Laye, known for its delicious culinary specialties? 😋

Don’t wait any longer to enjoy a luminous experience and shine in the Fireflies of Josas race! 🏃