Sisu Backyard Ultra at Lake Rebecca
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SISU Backyard Ultra at Lake Rebecca
The SISU Backyard Ultra takes place on September 5, 2026, at Lake Rebecca in Rockford, MN, with the meeting location given as 9831 Rebecca Park Trail. Registration closes on Thu, Sep 3 at 11:59 AM CT and the listed entry fee is USD 125.97.
The event follows the Backyard Ultra format: participants run a 4.167-mile loop each hour, on the hour. Runners must finish the loop within the hour and be ready to start the next loop on time; failure to do so ends that runner's race. There is no set finish line; competitors may aim for any distance they choose, from a single loop to multiple ultra distances.
The loop route includes a mix of gravel, asphalt, and trail surfaces, providing varied terrain through day and night. After each loop there is time to rest, refuel, change gear, or use on-site amenities; the event includes a sauna and a swim option after running.
Participants may bring crew or friends. The format emphasizes repeated hourly loops and self-defined goals rather than a fixed race distance. Visit the organization's website for the most recent information.
