MoMoFo 100k
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MoMoFo 100k and 20 mile Fun Run
MoMoFo is a multi-day trail event in Morgan Monroe State Forest near Martinsville, Indiana, on June 4-5, 2027. The program includes two distances:
- 100 km
- 20 miles
The 100 km is an ultramarathon on varied terrain. The course composition is about 85% single track, 11% forest service road, and 4% paved road. Total climbing is about 8,500 feet. The 100 km has a cutoff time of 20 hours.
The 20 mile event is a single loop that uses the same route as the 100 km. Runners in the 20 mile loop have 6 hours and 30 minutes to complete one circuit. Aid stations support both distances.
The forest setting includes old growth trees, natural rock formations, lakes, creeks, and notable hills. Early June conditions may include southern Indiana summertime heat and humidity.
Registration opens June 14, 2026, and closes November 30, 2026. Listed entry fees include $150 for the standard 100 km and $135 for a no swag 100 km option, and $65 and $50 options for the 20 mile event. Visit the organization's website for the most recent information.
