A Fastest Known Time (FKT) is the speed record for a running, hiking or cycling route.
[1] Unlike most endurance sports competitions such as marathon world records, FKTs are self-organized and done alone or in small groups.
[5] Informal, unverified speed records have long existed on named trails, but the invention of handheld GPS devices, such as GPS watches or personal locator beacons, made it significantly easier and more reliable to collect and compare fastest times on a route even in the backcountry.
[4][7] While there is no governing body for certifying FKTs, the site acts as an informal arbiter, sometimes requiring additional certification like photographs and pre-announcing your intent to attempt a record.
[8] FastestKnownTime.com tracks records in three styles:[9] This article about outdoor recreation is a stub.