Nestled along the picturesque Yon River, this trail race offers runners an immersive journey through diverse landscapes. The course winds its way through charming vineyards and meanders through lush forests, providing breathtaking views at every turn. With routes ranging from 10 kilometers to a challenging 32 kilometers, there's something for all levels of experience. Last year’s event saw full capacity with over 750 participants, ensuring an intimate yet vibrant atmosphere where runners can fully enjoy the scenic beauty and technical terrain without feeling crowded. The shorter distances cater to those looking to dip their toes into trail running, while more seasoned athletes will find the longer routes a perfect challenge for honing ultra-running skills. Participants in all three races have the satisfaction of knowing that every entry contributes directly to supporting causes related to disability assistance, with 1€ donated per runner and walker. The event strictly adheres to online registration only; no on-site sign-ups are available on race day. The 10-kilometer course is ideal for beginners or those looking for a gentle introduction to trail running, featuring rolling hills that add up to around 190 meters of elevation gain. This route accommodates up to 260 runners eager to explore the beauty and simplicity of trail racing in a supportive environment. For those seeking more adventure, the 17.5-kilometer option invites participants into deeper forest trails and vineyards, offering similar terrain challenges with an additional 190 meters of elevation gain. This route is limited to 370 runners who are ready for a longer yet still manageable experience in nature. The ultimate test awaits at the 32-kilometer distance, designed primarily for experienced trail runners preparing for ultra-marathons or those simply looking for an extended adventure on foot. With over 620 meters of elevation gain and limited to just 120 participants, this route promises a rigorous yet rewarding journey through varied terrain. Whether you're drawn by the serene beauty of the Yon River corridor or seeking a challenging trail run in a supportive community setting, this event offers an unforgettable experience that blends athleticism with environmental appreciation.
Races Offered
TRAIL 10 KM
Oct 11, 2026
straighten
Distance —
10K
terrain
Type —
Running
timer
58 days remaining
sell
€13.00
TRAIL 17,5 KM
Oct 11, 2026
straighten
Distance —
17.5K
terrain
Type —
Running
timer
58 days remaining
sell
€16.00
TRAIL 32 KM
Oct 11, 2026
straighten
Distance —
32K
terrain
Type —
Running
timer
58 days remaining
sell
€22.00
Weather History
These values represent the 3-year monthly averages for October in Rosnay.
thermostatTemperature
9.5° / 16.6°
wb_sunnyFeels like
6.7° / 14.1°
light_mode
Avg sunshine hours
6h 23m
water_drop
Avg rainfall
2.7 mm
ac_unit
Avg snowfall
—
air
Avg wind speed
13.9 km/h (Gentle breeze)
opacity
Sweat loss rate
Low
terrain
Course conditions
Firm and slightly soft
sunny
Max UV Index
Low (2.8)
humidity_mid
Humidity
82.6%
wb_twilight
Sunrise
08:07
nightlight
Sunset
18:52
About Rosnay
Learn more about the host city, Rosnay.
Rosnay may refer to the following places in France:Rosnay, Indre, a commune in the Indre department
Rosnay, Marne, a commune in the Marne department
Rosnay, Vendée, a commune in the Vendée department
Rosnay-l'Hôpital, a commune in the Aube department