July 15th, 2017, the 4th Grand Trail of the Valley of Ossau: Laruns_Louvie-Juzon_Laruns!

On the menu of the GTVO: 75 km and 5300D + which the competitors will have to run alone or in relay of 2. The route makes a complete tour of the Valley of Ossau by crests and summits, via the collars of Marie-Blanque and Aubisque. To note that the race "solo" is qualifying for the races of him Ultra Trail du Mont Blanc 2017.