Trail du Josas

About the Event

Experience the legendary "Jovacienne" spirit at the Trail du Josas 2026, a cornerstone of the Île-de-France running calendar returning to Jouy-en-Josas on March 28 and 29, 2026. Renowned for its perfect blend of athletic challenge and festive camaraderie, this event offers a weekend of immersive trail running through the bucolic landscapes of the Yvelines. Whether you’re a technical runner seeking elevation and "single-track" mud or a family looking for a high-energy sporting memory, the Trail du Josas delivers an unparalleled atmosphere where every effort is rewarded with community warmth and local flavors.

The weekend kicks off on Saturday, March 28, with dedicated youth races designed to introduce the next generation to the joys of trail running. These secure, age-appropriate courses emphasize fun and shared achievement, serving as a vibrant prelude to the main events. On Sunday, March 29, the adult trails take center stage, featuring a variety of distances that showcase the region's diverse terrain. Participants can expect a meticulously organized race supported by a passionate team of volunteers, fully stocked aid stations, and the iconic finish-line reward: the famous post-race paella, local farm yogurts, and craft beer that have made this race a true institution among Parisian runners.

Registration for the 2026 edition is officially open! In compliance with the French Athletics Federation (FFA) regulations, all non-licensed adult participants must complete the Health Prevention Path (PPS) online within three months of the race to validate their entry. As a race committed to social impact, the Trail du Josas continues its legacy of support for local associations and inclusive sports, often featuring joëlettes to ensure the trails are accessible to all. Secure your spot today to discover why elite trailers and hobbyists alike return year after year for the grit of the climbs and the magic of the Josas finish line.

Races Offered

Trail 5 km

Mar 28, 2026

straighten

Distance — 5K

terrain

Type — Running

timer

15:00

sell

€3.00

Trail 3 km

Mar 28, 2026

straighten

Distance — 3K

terrain

Type — Running

timer

16:00

sell

€3.00

Trail 1.5 km

Mar 28, 2026

straighten

Distance — 1.5K

terrain

Type — Running

timer

16:30

sell

€3.00

Trail 1 km

Mar 28, 2026

straighten

Distance — 1K

terrain

Type — Running

timer

17:00

sell

€3.00

The Oberkampf

Mar 29, 2026

straighten

Distance — 35K

terrain

Type — Running

timer

08:30

sell

€45.00

La Blum

Mar 29, 2026

straighten

Distance — 27K

terrain

Type — Running

timer

09:15

sell

€35.00

Nordic Walking

Mar 29, 2026

straighten

Distance — 16K

terrain

Type — Running

timer

09:20

sell

€25.00

La Calmette

Mar 29, 2026

straighten

Distance — 16K

terrain

Type — Running

timer

10:00

sell

€25.00

Weather Overview

These values represent the 3-year monthly averages for March in Jouy-en-Josas.

Temp (°C)

Feels Like (°C)

thermostat 4.5° / 12.1°

wb_sunny 0.4° / 8.2°

Wind (km/h)

Humidity (%)

air 14.3 /

water_drop 79.5%

Temp (°C)

Feels Like (°C)

Wind (km/h)

Humidity (%)

thermostat 4.5° / 12.1°

wb_sunny 0.4° / 8.2°

air 14.3 km/h

water_drop 79.5%

About Jouy-en-Josas

Learn more about the host city, Jouy-en-Josas.

Jouy-en-Josas is a commune in the Yvelines department in the Île-de-France region in Northern France. It is located in the southwestern outer suburbs of Paris, 16.4 km (10.2 mi) from the centre of Paris, on the departmental border with Essonne.