Grassroots Backyard Ultra
GrassRoots Backyard Ultra : Okotoks, Alberta : June 27, 2026
The GrassRoots Backyard Ultra returns for its fifth edition on June 27, 2026 in Okotoks, Alberta. The event uses the Backyard Ultra format (Last Person Standing) and includes two timed events with limited capacity. The Last Person Standing winner receives a $500 prize and an additional $250 if a new course record is set. The current course record is 35 loops, set in August 2024. Registration opens September 15, 2025 and closes May 31, 2026. There are no refunds. Registrations may be transferred until June 1, 2026 for a $20 administration fee.
Course, formats and race rules
The course is a 6.71 km loop on the Sheep River pathway with some single-track dirt trail and 34 metres of gain. It is an open public course near local hotels, restaurants, family recreation, and the Lions Park campground across the river. More than half of the 2024 field completed 15 loops (about 100 km).
Events and distances:
- Backyard Ultra - Last Person Standing format
- BACKYARD15 (BY15) - 15 hours, 100.65 km
- BACKYARD24 (BY24) - 24 hours, 100 miles
Key rules: runners must complete the 6.71 km loop within one hour or they are a DNF. A new lap starts at the top of each hour and warning whistles sound 3, 2, and 1 minute before each lap. All competitors must start moving at the bell and be in the starting corral before the next lap begins. No aid is allowed while on course after the bell. The final remaining runner must complete one additional lap to be declared the winner. Age limit is 16 years or older on race day. Visit the organization's website for the most recent information.