In 28 days · Sat, Sep 5, 2026
Don't let race day sneak up
One email during race week. That's it.
When
Saturday, September 5th, 2026
Where
9831 Rebecca Park Trail, Rockford MN
Distance
Ultra
Typical weather
58–75°F · low rain risk
See last 10 years
On this date: rain 1 of the last 10 years
2025
44–57°F
dry
2024
61–73°F
dry
2023
72–89°F
dry
2022
57–76°F
dry
2021
59–75°F
dry
2020
55–77°F
dry
2019
59–82°F
dry
2018
59–71°F
dry
2017
53–62°F
dry
2016
68–79°F
rain
Best months to race in Minnesota →
About this race
Why the SISU Backyard Ultra?
- Location: Lake Rebecca, 9831 Rebecca Park Trail, Rockford, MN
- Date: 2026-09-05
- Website: Register here
- Experience: Running, grit, community, and a true Finnish touch — complete with a sauna and swim option after your run.
The Challenge
- Format: Complete a 4.167-mile loop every hour, on the hour.
- Rest: Finish in time and you can rest, refuel, change gear, hit the sauna, or take a swim.
- Continuation: If you do not finish the loop within the hour, your race is over.
- Goals: No set finish line: define your own success—one loop, a marathon, or beyond!
Course Details
- Terrain: A mix of gravel, asphalt, and trail.
- Scenic: Experience a varied course throughout the day and night.
- Challenge Level: Designed to be hard, welcoming, memorable, and fun.
- Community: Bring your crew, bring your friends, bring your stubbornness.
Join SISU
- Participation: Suitable for runners of all experience levels.
- Event Experience: Attempt your first backyard ultra or chase a new distance.
- Adventure: Come run one loop or see how far you can go.
- Invitation: Be part of this unique running event.
Course map
Train with a club
Run clubs near Rockford to train with before race day.
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