UTMB® World Series is the world’s ultimate trail running circuit that allows all runners to experience the UTMB adventure through the best, leading international events. Built on the values of fair play, solidarity, protection of our environment and delivering an exceptional local experience, the UTMB World Series gives runners the chance to live the UTMB adventure close to home and to begin their quest to HOKA UTMB Mont-Blanc and the UTMB World Series Finals.