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Isabelle Viseux-Poletti
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UTMB event impact in Chamonix
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Latest: UTMB 2026: Ultra-trail festival sparks debate in Chamonix
The 23rd edition of the Ultra-Trail du Mont-Blanc (UTMB) is currently underway, featuring eight races across France, Italy, and Switzerland. The event draws approximately 10,000 runners and up to 100,000 spectators to th