Skyrunning is a sport of mountain running above 2,000 metres (6,600 ft) where the minimum average incline is 6% over the total distance and at least 5% has an incline of 30% or more.[1] The climbing difficulty does not exceed II grade UIAA.[2] Poles, crampons, and hands may be used to aid progress. The governing body is the International Skyrunning Federation.
The sport comprises a number of different disciplines from the short, steep Vertical Kilometer to the more popular SkyRace and SkyMarathon.[3] Ultra SkyMarathons are becoming increasingly popular as are short vertical SkySpeed races which include skyscraper racing.