Of course not! No need either to Su(p)lly-e us, everyone is welcome in Rosny-sur-Seine 🏃.
In the month of September, when the call of school terms becomes more insistent and the August holidays start to turn into vague summer memories, the Athletics Club of Rosny-sur-Seine doesn’t give up ⚔️. Some sunny rays persist, and it’s best to enjoy them ☀️. On this occasion, an event offering 4 nature races is organized annually in the small department of Île-de-France in the Yvelines. On the program: discovery trail, a short trail and a walking course 🥾. The numbers don't lie and promise routes of 11 km, 19 km, and 31 km for running enthusiasts 🏃. The Sunday athletes (literally in this case 😆) will have the right to a nice loop of 15 km walk to keep their legs moving over time 🌬️.
If you came for a trail 100% greenery 🌱, you will not be disappointed. The deal is simple: forest, forest, and more forest. After 30 km surrounded only by grass and foliage, you may even wonder if civilization ever existed 😬. Thankfully, the volunteers will remind you that the spirit of community is always present and will encourage you to move forward. When it comes to elevation, nothing to make a fuss about, even if in the area, the specialties are not lacking... 🤤 The buffet, we’ll talk about it once at the finish! No more than 800 mD+ for the largest 30 km tour, it's pretty cool to hear 😮💨. The 19 km of trail also complete with only 500 mD+, which should be enough to make your thighs heat up, but should leave you some strength to finish the race 💪. In any case, no matter which route you choose, you will zigzag between the oaks and the beeches towards the finish line like a little squirrel searching for its daily nut 🐿️. Put away your latest carbon pair in the closet, here you’ll need to get your hands feet dirty, for real 😎.
And if you are still looking for an extra motivation, let us tell you about the surroundings 🗣️. If you come with company, the famous Thoiry zoological park and its safari are just a short drive to greet the lions 🦁. Whether we are young children or we have passed forty, animals always inspire the same admiration 🤩. History enthusiasts will also have a vast playground in front of them, with the majestic Château de Versailles at hand 🏰. And if you wish to prepare already, you can even watch the eponymous series to seem like a culture buff 🤓. But for many, the interest of journeys lies in the stomach rather than the knowledge 😭. And like all the other boxes, the western department of Île-de-France also ticks this one 😳. The Napolitan Rambolitain, the Mérinos terrines, the Paris-Brest or more recently the Yolin, you can oscillate as you please between sweet and salty 🧂.
Don’t wait for the leaves to fall 🍂, put on the right pair, and join the Fran-sully-ian (Parisian) adventure! ❤️🔥
The organizer’s word:
"Come discover the Rosny-sur-Seine forest through our trail courses of 11, 19, or even 31 km and also a 15 km walking version."
You can pick up your bib on the race day, Sunday, September 13, 2026, in Rosny-sur-Seine.
The races will start on Sunday, September 13, 2026, at École des Baronnes, 78710 Rosny-sur-Seine:
For the 11 km: at 10am
For the 19 km: at 9am
For the 30 km: at 8:30am
For the 15 km walk: at 9:15am
No, it's not mandatory, however, you will need to present a PPS certificate dated less than a year from the race date.
A time barrier will be set only on the 31 km course. It will be communicated via the website before the event.
Yes, refreshments are planned according to the races:
For the 11 km and 15 km walk: 1 unique refreshment at the finish line
For the 19 km: 1 refreshment on the course and 1 refreshment at the finish
For the 31 km: 2 refreshments on the course and 1 refreshment at the finish
The refreshment points will be managed by association volunteers.
If you have more questions, you can contact the association's president by email: hguillemot781@gmail.com
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