Sisu Backyard Ultra at Lake Rebecca
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Sisu Backyard Ultra at Lake Rebecca
The Sisu Backyard Ultra at Lake Rebecca is a backyard ultra event on September 5, 2026, held in Rockford, Minnesota at 9831 Rebecca Park Trail. The event uses the backyard ultra format, where participants repeat a measured loop each hour until they stop.
The loop distance is 4.167-mile. Runners must complete the loop within the hour and be ready to start the next loop on time; a runner who does not finish a loop within the hour or cannot start the next loop is finished for that event. Participants may rest, refuel, change gear, use a sauna, or take a swim between loops.
The loop surface includes a mix of gravel, asphalt, and trail. The course is used during both daytime and nighttime hours.
The event name references the Finnish word sisu, which refers to determination, toughness, resilience, and the willingness to keep going when things get hard. The published registration fee is USD 107.68 and the registration period opened in June 2026; registration closes on September 4, 2026. Visit the organization's website for the most recent information.
