A multi-day trail running festival held annually in Innsbruck, Austria, with distances ranging from 7 to 110 km. Founded in 2016, IATF has become one of the largest trail running events in the German-speaking region (DACH), drawing more than 7,000 participants. The longest races begin at the Tyrolean State Theatre and share sections of the Nordkette balcony trails, with high-alpine terrain reaching 2,300 m around landmarks such as the Kalkkögel and Patscherkofel. The 2025 edition marked the festival's 10th anniversary and hosted the Austrian national championships in mountain and trail running.