King Street Backyard Ultra
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King Street Backyard Ultra, Colona, IL
King Street Backyard Ultra is a Backyard Ultra event held at 1350 Cleveland Rd., Colona, Illinois. The event uses a standard Backyard Ultra format with a single loop repeated every hour. Each loop is 4.17m in length and is run on the hour; participants continue running loops each hour until they stop.
The course is described as generally flat and fast with one notable hill that climbs out of a ravine near the halfway point of the loop. The site offers plenty of parking and space for participants to set up camp during the event.
Registration information lists an entry fee of US$71.56 and a registration closing date of November 3, 2026. The event is scheduled for November 7, 2026 in Colona, IL. The format and loop length make the race suitable for runners interested in testing endurance over repeated circuits rather than a fixed-distance race. Visit the organization's website for the most recent information.
