October ultramarathons in Indiana, United States

Multiple-loop 50k course through Tryon Farm’s natural habitats in Michigan City, supported by on-course aid stations

Rugged singletrack and rolling terrain on looping courses through hardwood forests and around kettle lakes at Chain O’Lakes State Park

Looped one-mile paved course in Indiana with an 8-hour time limit for runners and walkers

Flat, fast 50K on central Indiana’s B&O Trail, linking Speedway, downtown Indianapolis and quieter rural stretches.

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

Rugged climbs and technical singletrack through fall foliage on the historic Tecumseh Hiking Trail near Yellowwood Lake

Technical 50k at O’Bannon Woods State Park: two longer loops and a shorter finish loop, with roughly 3,500 feet of elevation gain.