Mont-Blanc Marathon 2026 is a future multi-day trail running festival in Chamonix-Mont-Blanc. Importance evidence: Official Mont-Blanc Marathon page states From June 25 to June 28, 2026 and says 10,000 runners take part across 8 trail races; iconic Chamonix/Mont-Blanc mountain running festival organized by Club des Sports de Chamonix.
Date
25 juin 2026 - 28 juin 2026
Distance
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Elevation
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Difficulty
Difficile