Smurf's Backyard Ultra
Always double-check with the organizer's website! This page may contain affiliate links.
Smurf's Backyard Ultra
Smurf's Backyard Ultra is an endurance loop event held at Smithfield Mountain Bike Park in Cairns, Far North Queensland, Australia. Runners complete a 6.7 km lap on the mountain bike trails each hour; laps are repeated every hour until only one competitor remains able to continue.
The event takes place in tropical Cairns and uses the local Smithfield MTB trail network. A Mini Backyard option is offered for participants who plan a shorter effort, consisting of up to six laps.
The weekend includes an on-site social element with a Saturday night event party that features food, drinks, a bar and live music. The organiser lists the event dates as October 24-25, 2026.
Practical details presented by the organiser include the event location, course format, the Mini Backyard option, and the social program on Saturday night. The format focuses on repeated hourly laps of the same 6.7 km course on marked mountain bike trails at Smithfield Mountain Bike Park. Visit the organization's website for the most recent information.
