MoMoFo 100k
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MoMoFo 100k and 20 mile Fun Run
MoMoFo takes place June 4–5, 2027, in Morgan Monroe State Forest (6220 Forest Rd, Martinsville, IN 46151, USA). The event comprises a 100 km ultra and a 20 mile fun run that use the same loop through old growth forests, natural rock formations, lakes, creeks, and hills. The course includes about 8,500 feet of climbing and is composed of roughly 85% single track, 11% forest service road, and 4% paved road.
The organizer lists specific support at each aid station for both distances. The 100 km race has a 20 hour cutoff. The 20 mile fun run is a single loop with a 6 hours 30 minutes cutoff. Registration details and fees are as follows: registration opens June 14, 2026; the 20 mile registration closes October 31, 2026, with a fee of $65.00; the 100 km registration closes November 30, 2026, with a fee of $150.00. The event notes an atmosphere of community support and includes a lighthearted detail of free hugs offered to participants.
Distances: Visit the organization's website for the most recent information.
- 100 km ultra on the full loop, about 8,500 ft climbing, 20 hour cutoff.
- 20 mile fun run loop, same course as 100 km, 6 hours 30 minutes cutoff.
