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Trail of Josas 2026

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TrailNordic WalkingRoad Running
🏞 Nature🛶 Lakes & Ponds👶 Children & Juniors Course
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The event in a few words

Every year, between the end of March and the beginning of April, the Trail of Josas takes place in Yvelines. The town of Jouy-en-Josas, in Île-de-France 🇫🇷, opens its doors to the Vallée de la Bièvre (⚠️ not to be confused with the "Vallée de la Bière" 👀). Just about twenty km from Paris, you’ll be able to taste a bit of hops nature away from the hustle and bustle of the capital 🍃.

Three distances are offered for this trail: "La Calmette" of 16 km, "La Blum" of 28 km, and "The Oberkampf", of 36 km 📊. Enough to satisfy everyone! With more or less elevation depending on the chosen course, it remains technical with the numerous ups and downs. There will also be a few steps to climb (it’s good for the cardio ❤️). So no taking the elevator ❌, and watch your step because some passages remain acrobatic 🏃🏃‍♀️. For those less in a hurry, a 16 km Nordic walking route is also available. So, no excuses possible. Since 2026, the organizers have even decided to put children in the spotlight, and 4 races are now dedicated to them 👶. From 1,000 m to 5,000 m and from 7 to 17 years, the organization has broadly swept to get as many young people on the courses as possible. Different starts are given the day before the adult courses 🕰️, so young and old alike can cheer each other on 🗣️. Lace up your shoes and tie your laces tight because it's time to elbow your way and stand out against the other competitors. 🏆

We promised you nature, and you will get it! A very wooded course will take you through the Versailles National Forest 🌳 and through many woods, like the Metz woods (nothing to do with the city 🏙️, but if you’re interested in visiting the Moselle, we offer races there 😉) or the Dead Man's woods (the name is a bit grim, but you’ll see that it's a nice spot 😊).

A watercourse immediately adds charm to a landscape, and that's why by running along the Bièvre river (several times) you'll realize the beauty of the area 🤩. You will also pass by the Geneste pond, but there's no time to cool off there, you have a race to finish 🏁! To finish, you will stroll through the streets of some villages, such as Jouy-en-Josas. And yes, just because we are in Île-de-France doesn’t mean there aren’t beautiful towns to discover.

At the end of your race, a meal will be served to you (included in the registration price ✅) to share a little moment of conviviality 👌. As for the local cuisine, taste the Houdan pâté or the Niflette, a pastry made of puff pastry and pastry cream 🧑‍🍳. While you're in the area, feel free to take a little trip back in time and visit the Palace of Versailles 🏰 or the National Domain of Saint-Cloud. Even closer to the race site, you can stop by the Jouy Fabric Museum! 😍

So, are you already Jouy-ed at the idea of doing this trail? 🤪

4 reasons to join this race

Its green setting 🌱
"Two settings, two moods," that's how you could describe the difference between Paris and Jouy-en-Josas 😳. By visiting, you'll quickly realize that even just a few kilometers from Paris, the landscapes change dramatically. Here, you’ll find more wooded trails 🪵, small streams, and green spaces than you would by combining several districts in central Paris. Simply put, nearly half of the land is covered with woods 🌾. That's quite a playground in the heart of nature, right 👟?
Its festive meal 🥳
It's one of the rare trails where you can run, eat, and party at the same place and on the same day ☀️. The meal included in the price of your race number adds a very special dimension to this race, and you'll see that after several hours of running, it will be most welcome 🥘. The spirit of conviviality is unique and will leave you with unforgettable memories 💭.
A family outing 🧑‍🧑‍🧒
With all kinds of races for adults, the Nordic walk for the more relaxed 🦥, and numerous junior races, the Trail of Josas is the perfect opportunity to bring along step-dad, step-mom, and the kids for a weekend excursion 🚗. Perfect for reconnecting with the in-laws without embarking on a multi-day trip 😎.
Its proximity to Paris 🏙️
Just a few kilometers from the City of Light 💡, the race takes advantage of the benefits without the drawbacks of it. You can enjoy the Parisian public transport 🚇 easily connecting Jouy-en-Josas to Paris in just 30 minutes, many Parisian cultural sites, or countless French restaurants 🥖 you'll find downtown; all without worrying about noise 🔇, traffic, pollution, or the grayness of Paris. It's an ideal geographical in-between 😁.

Message from the organizer:

"This is the 16th edition of the Trail of Josas: a wonderful event that crosses part of the Vallée de la Bièvre. The volunteers are fully behind you to help, guide, and encourage you. A giant paella awaits you at the finish, so sign up!"

A distance for every taste

Frequently asked questions (FAQ)

You can pick up your race number at the start/finish site, at the Sports and Community Center of Jouy-en-Josas, at 35 Rue St Roch, 78350 Jouy-en-Josas:

  • On Saturday, March 28, 2026, from 1 PM to 6 PM

  • On Sunday, March 29, 2026, before the race start times (from 7 AM)

The races will start at the Sports and Community Center of Jouy-en-Josas, at 35 Rue St Roch, 78350 Jouy-en-Josas:

  • For the children's 5,000 m: on Saturday, March 28, 2026, at 3 PM

  • For the children's 3,000 m: on Saturday, March 28, 2026, at 4 PM

  • For the children's 1,500 m: on Saturday, March 28, 2026, at 4:30 PM

  • For the children's 1,000 m: on Saturday, March 28, 2026, at 5 PM

  • For The Oberkampf: on Sunday, March 29, 2026, at 8:30 AM

  • For La Blum: on Sunday, March 29, 2026, at 9:15 AM

  • For La Calmette: on Sunday, March 29, 2026, at 10 AM

  • For the Nordic walk: on Sunday, March 29, 2026, at 9:20 AM

No, it is not required; however, you must present a PPS certificate dated less than three months from the date of the race.

Yes, here they are:

  • For the children's 5,000 m: born between 2009 and 2010

  • For the children's 3,000 m: born between 2011 and 2014

  • For the children's 1,500 m: born between 2015 and 2016

  • For the children's 1,000 m: born between 2017 and 2019

  • For The Oberkampf and La Blum: born in 2006 or before

  • For La Calmette: born in 2008 or before

  • For the Nordic walk: born in 2008 or before

Prices vary depending on the races:

  • For children's races: €3 (€4 on site)

  • For La Calmette and the Nordic walk: €25

  • For La Blum: €35

  • For The Oberkampf: €45

Yes, here they are:

  • A time barrier at 11:30 AM for the 28 km (La Blum) at km 14 (bois des Metz).

  • A time barrier at 11:30 AM for the 36 km (The Oberkampf) at km 22 (bois des Metz).

Refreshments are planned:

  • For La Calmette & the Nordic walk: km 10.5 and at the finish

  • For La Blum: km 10.5, then km 14, then km 19, and at the finish

  • For The Oberkampf: km 10.5, then km 23, then km 28, and at the finish

Yes, here it is:

  • A personal cup

  • A survival blanket

  • A mobile phone (in case of emergency)

  • Your ID card

It is also recommended to have water and food supplies with you.

Your registration includes:

  • Your race number for the race

  • The post-race meal (for adult races and the Nordic walk)

If you have further questions, you can contact the organizers by email right here: traildujosas@gmail.com

You can check the race rules here

Results - Trail of Josas

2023 editionView results
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