Prairie On Fire Backyard Ultra
Noblesville, United States • 12 Sep 2026
Prairie On Fire Backyard Ultra : Noblesville, IN
The Prairie On Fire Backyard Ultra is the fifth annual edition scheduled for September 12, 2026, at White River Campground in Noblesville, Indiana. The event follows the Backyard Ultra format: runners must complete a 4.167 mile loop within each hour and may start the next loop only if they finish the current one. The sequence continues until a single runner remains.
The loop combines trail and road surfaces. It includes dirt and gravel sections through Koteewi Park and paved trail along E 234th Street. Course configuration is described as similar to the previous year and repeats the same measured distance each hour.
Organizers are listed as MTC and Hamilton County parks. Registration closes on September 10, 2026. Past editions have included runners who achieved very long distances, with more than 20 runners exceeding 100 miles in 2025. The event page lists the site address as 11299 E 234th St, Noblesville, and notes the campground and park as the venue and course areas. Visit the organization's website for the most recent information.