Discover the raw, authentic soul of mountain running at the third edition of the Trail du Bostet on Saturday, June 6, 2026, in the stunning Beaufortain Massif. This event, born from local passion, takes you deep into the private training gardens of elite trail runners on the wild slopes above Nâves, where the only sounds are cowbells, chainsaws, and your own breath. Choose your challenge from the new, epic 36km 'Intégrale' with 2,200m of ascent, the classic 21km 'Bostet' semi-marathon, or the punchy 11km 'Bost'express'—all offering breathtaking ridges, technical trails, and climbs to over 2,400 meters. This is proper, old-school mountain racing with a modern twist, where the finish line is just the beginning of the party.
The atmosphere is legendary, fueled by a dedicated local "Team" clad in blue and pink who create roaring "Fan Zones" on the high passes like the Quermoz, where supporters hike in to cheer. Your entry includes a runner's gift and a hearty post-race meal, capping a day that blends deep personal challenge with genuine Alpine camaraderie. With UTMB and ITRA points on offer and all distances supporting the association "Vaincre la mucoviscidose," this is more than a race; it's a celebration of the mountains, community, and giving your all on the most beautiful trails Savoie has to offer.
Races Offered
5 km
Jun 06, 2026
straighten
Distance —
5K
terrain
Type —
Running
timer
11:15
Trail 21 km
Jun 06, 2026
straighten
Distance —
21K
terrain
Type —
Running
timer
13:30
Trail 11 km
Jun 06, 2026
straighten
Distance —
11K
terrain
Type —
Running
timer
14:30
Weather History
These values represent the 3-year monthly averages for June in La Léchère.
thermostatTemperature
8.4° / 20.3°
wb_sunnyFeels like
7.1° / 19.3°
light_mode
Avg sunshine hours
12h 30m
water_drop
Avg rainfall
5.7 mm
ac_unit
Avg snowfall
—
air
Avg wind speed
3.8 km/h (Light breeze)
opacity
Sweat loss rate
Low
terrain
Course conditions
Firm and slightly soft
sunny
Max UV Index
Moderate (5.6)
humidity_mid
Humidity
76.2%
wb_twilight
Sunrise
05:45
nightlight
Sunset
21:23
About La Léchère
Learn more about the host city, La Léchère.
La Léchère is a commune in the Savoie department in the Auvergne-Rhône-Alpes region in south-eastern France. It is situated in the Isère valley, between Albertville and Moûtiers. It was formed in 1972 by the merger of the former communes Notre-Dame-de-Briançon, Celliers, Doucy, Naves, Petit-Cœur and Pussy. On 1 January 2019, the former communes Bonneval and Feissons-sur-Isère were merged into La Léchère.
