Cairns, Australia
Saturday, October 24, 2026
Distance
Climb
Start Time
Cutoff
Terrain
Difficulty
Max Runners
Smurf's Backyard Ultra is a backyard-style ultramarathon in Cairns, QLD, Australia, with a 28-hour time limit. The race follows a loop course where runners must complete a 6.706 km loop each hour until only one runner remains. Also includes a Mini Backyard option for up to 6 laps.
Smithfield Mountain Bike Park trails
Rainforest single track
Scenic tropical setting
Start / Finish
Smithfield Mountain Bike Park, Cairns, QLD, Australia
Smithfield Mountain Bike Park, Cairns, QLD, Australia
Terrain
Route
Race Day
What you get
Chip timing
Entry gift
DNF award
Stocked aid station
Event timing
On the day
Toilets
Marshals on course
First aid on course
Water on course
Before you enter
Other questions
A Backyard Ultra is an elimination-style race where runners must complete a 6.706 km (4.167 mile) loop every hour. The race continues until only one runner remains who can complete the loop within the hour. The last runner standing is the winner.
No, there is no qualification requirement for this event.
The course is a 6.7km loop on open dirt roads and single track rainforest trail with approximately 125m elevation per lap. It is suitable for runners who can run 10km in 80-90 minutes.
Yes, volunteer information is available at https://www.smurfbyu.com.au/volunteer/.
Yes, the event is limited to 250 entries total for both races.
Cairns, Australia
Saturday, October 24, 2026
More races like this one
€42
entry feeRace finished
