12hr ultramarathons in Indiana, United States

Nighttime endurance laps on an illuminated dirt horse track at Harrison County Fairgrounds with continuous chip timing and flexible distance

Timed 6, 12, or 24-hour trail race on dirt and grass paths at St. Patrick's County Park, with overnight facilities and scenic park surroundings

Steep 4.167-mile loop with 25–30% grades, creek crossings, tree obstacles, rocky summit sections, and scenic descents at Deam Lake SRA

Looped course on scenic natural trails with out-and-back option for extra distance, supported by an aid station at the start and finish

Scenic loop around Bixler Lake with a mix of asphalt paths and woodland trails, featuring wetlands, beaches, convenient amenities, and flexible time options

6- or 12-hour timed challenge on a 5K mixed trail and road loop with community support, crew tents, amenities, and celebratory atmosphere in the park

Quarry cliffs, scenic ponds, and challenging climbs on a historic 4.5-mile loop amid reclaimed nature park and soaring turkey vultures