Grassroots Backyard Ultra 2025
Date
June 28, 2025
Location
Okotoks, Alberta
Events
The GrassRoots Backyard Ultra is set for its third edition on June 28, 2025, in Okotoks, Alberta. Participants run a 6.71 km loop primarily on flat, fast asphalt pathways along the Sheep River, with some single-track dirt trail and a modest 34 meters elevation gain. The course suits runners targeting personal distance records.
The event features a unique "Last Person Standing" race, where runners repeat loops until one remains, plus timed events for 15- and 24-hour durations aimed at milestone distances like 100 km and 100 miles.
The event features a unique "Last Person Standing" race, where runners repeat loops until one remains, plus timed events for 15- and 24-hour durations aimed at milestone distances like 100 km and 100 miles.
Race Schedule
Please check the official website for up-to-date times and pricing
GrassRoots Backyard Ultra 2025 - Backyard15
GrassRoots Backyard Ultra - Backyard15: 15-hour timed road event covering up to 100.65 km, flat and fast course in Okotoks, AB.
Ultra
Boston Qualifier
GrassRoots Backyard Ultra 2025 - Last Runner Standing
GrassRoots Backyard Ultra's signature Last Runner Standing event: 6.71 km loop repeated hourly until only one remains, on paved and dirt trails in Okotoks, AB.
Ultra
Boston Qualifier
GrassRoots Backyard Ultra 2025 - Backyard24
GrassRoots Backyard Ultra - Backyard24: 24-hour timed event, up to 100 miles on a 6.71 km loop in Okotoks, AB.
Ultra
Boston Qualifier
Course Details
- 6.71 km loop per lap
- Mostly asphalt pathways
- Small single-track dirt trail section
- 34 meters elevation gain per loop
- Flat and fast course ideal for personal distance records
- Mostly asphalt pathways
- Small single-track dirt trail section
- 34 meters elevation gain per loop
- Flat and fast course ideal for personal distance records
Race Highlights
- Flat, fast 6.71 km loop mostly on asphalt pathways along the Sheep River
- Small section of single-track dirt trail
- 34 meters elevation gain
- Open course on public pathways
- Features timed distance events for 100 km and 100 miles
- Last Person Standing course record: 35 laps by Preston Schaffer (August 2024)
- Small section of single-track dirt trail
- 34 meters elevation gain
- Open course on public pathways
- Features timed distance events for 100 km and 100 miles
- Last Person Standing course record: 35 laps by Preston Schaffer (August 2024)
RACE DAY COUNTDOWN
175
Days
175
Hours
175
Minutes
Date
June 28, 2025
Season
Summer (June-August)
Location
Okotoks, Alberta
Avg Temp
Warm (20-30°C)
Avg Humidity
