UTMB World Series is the ultimate global trail running series, bringing the trail running community together through a new, integrated sports system open to all.   The unique series unites the sport’s biggest stars and amateur runners through a leading international event series in the most stunning locations.  The UTMB World Series allows all trail runners to experience UTMB events worldwide, with 25 events taking place across Asia, Oceania, Europe, and the Americas in 2024-2025. It is the only place runners can begin their quest to UTMB Mont-Blanc, home of the prestigious UTMB World Series Finals.  The UTMB World Series integrates three levels of events: UTMB World Series Finals, UTMB World Series Majors, and UTMB World Series Events.  To qualify to enter the lottery for Finals or Major events, you must collect a "Running Stone" by finishing qualifier events in the 20k, 50k, 100k, or 100M categories.  Only 1 Running Stone has been acquired in the past two years, and it is mandatory to enter the lottery. Running Stones are cumulative and have no expiration date, and each Running Stone gives you an additional chance to be drawn.  Collecting Running Stones is the only way to access regular runners' UTMB World Series Finals.  Strambecco only covers US Series events, but here, you can discover the 25 worldwide events that will allow you to collect Running Stones to enter the UTMB Mont-Blanc lottery.