The Josas Fireflies

<p>We hope you have been good this year because Santa 🎅 won't be far from chasing you on the trails of the <strong>Josas Fireflies</strong> before his big annual tour... 🎁 It's in <a href="/en/activities/trail/trails-in-december" data-next-link="1">December</a>, during the Christmas market of <a href="/en/events?location_t=city&location_l=Jouy-en-Josas&location_v=48.76454500000001%2C2.169007" data-next-link="1">Jouy-en-Josas</a> that you'll start this <a href="/en/tags/nocturnal" data-next-link="1">night race</a> 🌙 promising you an extraordinary experience. The <strong>Josas Fireflies</strong> is the race where fireflies compete with shooting stars 💫. Whether you choose the <a href="/en/activities/trail" data-next-link="1">trail</a> of <strong>8 km</strong> or <strong>12 km</strong>, you'll run lighting up the gentle <a href="/en/tags/forest" data-next-link="1">forest landscape</a> of the <a href="/en/destinations/europe/france/ile-de-france-region/yvelines" data-next-link="1">Yvelines