The Isolienne Trail Challenge is a two-day mountain trail running event organized by the Union Sportive d'Isola in the Mercantour mountains. The competition features a vertical kilometer (KV) race and various trail running distances, including 15 km and 35 km options, with routes primarily above 2000 meters.
The Isolienne Trail Challenge is a two-day mountain trail running event organized by the Union Sportive d'Isola in the Mercantour mountains. The competition features a vertical kilometer (KV) race and various trail running distances, including 15 km and 35 km options, with routes primarily above 2000 meters.
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