Welcome to the Grangeons Loop, where runners of all shapes and sizes are embraced with open arms. This vibrant race takes place in Ambérieu-en-Bugey, nestled within the picturesque department of Ain in Auvergne-Rhône-Alpes. Just a short distance from Lyon, this event offers an unparalleled experience amidst the stunning foothills of Bas-Bugey. As you embark on your journey at the beginning of September, expect warm and inviting weather that sets the perfect backdrop for outdoor running. The race presents several trail options: the "Express Loop" covering 10 kilometers, the main "Grangeons Loop" stretching to 16 kilometers, or the more challenging "Ramequin Loop" at a formidable 35 kilometers. For those who prefer camaraderie over solitude, there's also an option for relay running. A unique highlight of this event is the festive hike that allows spectators and participants alike to cheer on runners as they pass through the scenic route. The atmosphere is electric along more than 15 kilometers where everyone’s enthusiasm fuels a lively and supportive environment. The course itself winds through Ambérieu-en-Bugey, offering glimpses into its rich heritage and natural beauty. From vineyards that dot the landscape to historic châteaux like Château des Allymes, each step reveals new sights and stories. The region is known for its Bugey wine production, with charming grangeons—small buildings used during grape pressing—that pepper the rolling hills. The terrain varies from gentle climbs through lush forests of fir trees to rocky paths that test your agility. Key landmarks along the route include the Cross of Luisandre, which offers breathtaking views of Mont Blanc on clear days, and the Blue Lake with its ever-changing hues reminiscent of a tropical paradise. These spots provide not only stunning visuals but also moments for reflection amidst nature's beauty. Beyond the physical challenge, the Grangeons Loop is celebrated for its vibrant atmosphere that rivals any summer festival. Music fills the air as runners push themselves along the route, creating an environment where everyone from seasoned athletes to casual hikers can find joy and camaraderie. For younger participants, there are special "Kids Loops" in 500 meters, 1 kilometer, and 2 kilometers. Post-race activities include exploring medieval Pérouges or cooling off with a visit to prehistoric caves at La Balme. And for those who crave local flavors, Ambérieu offers culinary delights such as pork-and-cheese galette and cervelle de canut, showcasing the region's rich gastronomic heritage. Whether you're looking to start your school year on an energetic note or simply enjoy a day immersed in nature and culture, the Grangeons Loop promises an unforgettable experience. Join us for a celebration of running that combines physical challenge with cultural immersion and community spirit.
Races Offered
La Ronde du Ramequin
Sep 05, 2026
straighten
Distance —
35K
terrain
Type —
Winter sports
timer
14:00
sell
€29.00
La Ronde des Grangeons
Sep 05, 2026
straighten
Distance —
16K
terrain
Type —
Winter sports
timer
15:00
sell
€20.00
La Ronde Express
Sep 05, 2026
straighten
Distance —
10K
terrain
Type —
Winter sports
timer
15:30
sell
€15.00
La Ronde des Kids
Sep 05, 2026
straighten
Distance —
0.5K
terrain
Type —
Winter sports
timer
16:00
sell
€0.00
Marche nordique 10 km
Sep 05, 2026
straighten
Distance —
10K
terrain
Type —
Winter sports
timer
71 days remaining
sell
€0.00
Repas pour les non-participants
Sep 05, 2026
straighten
Distance —
0K
terrain
Type —
Winter sports
timer
71 days remaining
sell
€0.00
La rando Festive
Sep 06, 2026
straighten
Distance —
15K
terrain
Type —
Winter sports
timer
08:00
sell
€28.00
Weather History
These values represent the 3-year monthly averages for September in Ambérieu-en-Bugey.
thermostatTemperature
12.9° / 22.3°
wb_sunnyFeels like
11.6° / 21.1°
light_mode
Avg sunshine hours
9h 35m
water_drop
Avg rainfall
4.4 mm
ac_unit
Avg snowfall
—
air
Avg wind speed
9.1 km/h (Light breeze)
opacity
Sweat loss rate
Moderate
terrain
Course conditions
Firm and slightly soft
sunny
Max UV Index
Moderate (3.5)
humidity_mid
Humidity
72.9%
wb_twilight
Sunrise
07:17
nightlight
Sunset
19:49
About Ambérieu-en-Bugey
Learn more about the host city, Ambérieu-en-Bugey.
Ambérieu-en-Bugey is a commune in the Ain department, Auvergne-Rhône-Alpes region, France. With 14,288 inhabitants (2020), it is one of the largest towns of the historical region of Bugey.
