The International Skyrunning Federation (ISF) is the governing body for the sport of skyrunning, which involves running in mountainous terrain at high altitudes. Founded in 2008, the ISF aims to promote and develop skyrunning worldwide, ensuring fair competition and safety for athletes. It organizes various events and championships, including the prestigious Skyrunner World Series. The ISF also establishes rules and regulations for skyrunning competitions, helping to standardize the sport across different countries. By collaborating with national federations and local organizers, the ISF works to grow the community of skyrunners and enhance the visibility of this exciting outdoor activity.