The GTWS was created to celebrate the passion and power of trail running. As the world’s leading short-distance circuit, it unites top athletes across 8 iconic races and a thrilling Grand Finale. 2025 calendar: • April 19: Kobe Trail (Japan) • April 26: Jinshanling Great Wall Trail Race (China) • May 17: Il Golfo dell’Isola Trail (Italy) • May 25: Zegama-Aizkorri (Spain) • June 22: Broken Arrow Skyrace (USA) • June 29: Tepec Trail (Mexico) • August 2: Salomon Pitz Alpine Glacier Trail (Austria) • August 9: Sierre-Zinal (Switzerland) • October 9-12: Ledro Sky Trentino Grand Finale (Italy)