Waterous Trail On Foot (Wtf)

The Waterous Trail on Foot (WTF) is Western Australia's original 100-mile trail ultra, held annually on the King's Birthday long weekend in September. The event features 100-mile, 50-mile, and 50-kilometer distances, with solo and relay options, all starting together and sharing the trail initially. The course primarily follows the Munda Biddi trail between Jarrahdale and Dwellingup, with the race headquarters now at Nanga Bush Camp.

Established in 2013, the race includes challenging out-and-back legs and a supportive trail running atmosphere. The WTF ultra is a celebrated endurance event in Western Australia, returning in 2026 after a 2025 hiatus. Visit the organization's website for the most recent information.