Experience the enchantment of the 10th edition of the Trail de la Vallée de la Sarre, set to take place on Sunday, October 11, 2026. This scenic trail race offers four distinct challenges for runners of all levels. Embark on the Mara Trail, a 42 km journey through lush landscapes with over 1500 meters of elevation gain. The race begins at 7:00 AM and promises to be an exhilarating test of endurance amidst nature’s beauty. For those seeking a slightly shorter challenge, there's the Semi Trail covering 21 kilometers with 650 meters of ascent. Participants will start their run at 8:30 AM, offering a perfect opportunity for runners looking to push themselves without overextending. The Aventure course is ideal for newcomers or seasoned athletes alike, stretching across 15 kilometers and climbing 410 meters. The race kicks off at 9:30 AM, providing ample time for last-minute preparations while ensuring the atmosphere remains vibrant throughout. For those just wanting to explore the area without committing fully, there's the Discovery Trail – a 10 km route with only 250 meters of elevation gain. This run commences at 10:00 AM and is perfect for casual runners or families looking to enjoy the scenic trails together. Water stations will be available along each course to keep you hydrated, ensuring that no runner faces thirst on this day. A comprehensive refreshment station awaits all participants upon crossing the finish line, offering a variety of beverages and light snacks. While there are no set cut-off times for these distances, organizers may consider implementing safety measures if necessary. Participants should be prepared with their own hydration as well to ensure they stay hydrated throughout the race. Don't miss out on this unique opportunity – registration closes online at 8:00 PM on October 10, but walk-ins are welcome until all spots are filled. The event promises to reward top finishers in both male and female categories with exciting prizes for first through third places. Every participant will receive a complimentary gift. Remember, medical clearance or proof of physical preparedness (PPS) is mandatory for participation. If you're ready to take on the challenge, join us as we celebrate at the Vallée de la Sarre! Follow our social media channels for more updates and get ready to run in one of Europe's most picturesque settings. Vivez l'aventure du 10ème Trail de la Vallée de la Sarre le dimanche 11 octobre 2026. Cette course offrira quatre défis distincts pour les coureurs de tous niveaux. Embarquez sur le Mara Trail, une course de 42 km avec plus de 1500 mètres d'ascension à travers un paysage verdoyant. La course démarre à 7h et promet de vous offrir un véritable test de l'endurance tout en profitant des beautés naturelles. Pour ceux qui cherchent une défis plus modéré, le Semi Trail couvrira 21 kilomètres avec seulement 650 mètres d'ascension. Les participants démarreront à 8h30 et auront l’opportunité de se surpasser sans trop s’épuiser. Le parcours Aventure est idéal pour les débutants ou les coureurs expérimentés, il mesure 15 km avec seulement 410 mètres d'ascension. La course commencera à 9h30 et offrira suffisamment de temps aux participants pour se préparer. Pour ceux qui veulent découvrir la région sans s’engager pleinement, le parcours Discovery couvrira 10 km avec seulement 250 mètres d'ascension. La course commencera à 10h et sera parfaite pour les coureurs amateurs ou les familles souhaitant profiter des sentiers. Des stations d'eau seront disponibles tout au long de chaque parcours, garantissant que vous resterez hydraté durant la course. Un stationnement complet attend tous les participants à l'arrivée avec une variété de boissons et de snacks légers. Bien qu'il n'y ait pas de temps limite pour ces distances, des mesures de sécurité peuvent être mises en place si nécessaire. Les coureurs doivent apporter leur propre hydratation afin d'être bien hydratés tout au long de la course.
Races Offered
L'AVENTURE
Oct 11, 2026
straighten
Distance —
15 km
terrain
Type —
Running
timer
100 days remaining
sell
€13.00
LA DECOUVERTE
Oct 11, 2026
straighten
Distance —
10 km
terrain
Type —
Running
timer
100 days remaining
sell
€10.00
LE MARA TRAIL
Oct 11, 2026
straighten
Distance —
42 km
terrain
Type —
Running
timer
100 days remaining
sell
€27.00
LE SEMI TRAIL
Oct 11, 2026
straighten
Distance —
21 km
terrain
Type —
Running
timer
100 days remaining
sell
€16.00
Weather History
These values represent the 3-year monthly averages for October in Guern.
thermostatTemperature
9.8° / 16.6°
wb_sunnyFeels like
7.0° / 14.0°
light_mode
Avg sunshine hours
6h 41m
water_drop
Avg rainfall
3.5 mm
ac_unit
Avg snowfall
—
air
Avg wind speed
14.4 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
85.2%
wb_twilight
Sunrise
08:33
nightlight
Sunset
19:22
About Guern
Learn more about the host city, Guern.
Guern is a commune in the Morbihan department of Brittany in north-western France.