MoMoFo 100k
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Event overview
The MoMoFo events take place June 5-6, 2026 in Martinsville, Indiana at Morgan Monroe State Forest (6220 Forest Rd). The main race is a trail 100 km run that starts in the evening and has a 20-hour cutoff. The course is primarily single track and includes old growth forest, natural rock formations, lakes, creeks, and hilly terrain with about 7,500 feet of climbing. The course surface is described as 85% single track, 11% forest service road, and 4% paved road. The 100 km event is open to participants aged 18 and older. Both the 100 km and the 20 mile fun run carry UTMB index points.
Distances, formats and support
- 100 km
- 20 miles
The 20 mile event uses the same loop as the 100 km course. Participants in the 20 mile fun run are given 6 hours and 30 minutes to complete one loop. Virtual options are available for both distances; virtual participants may complete their chosen distance between May 1 and June 7, submit GPS or other smart-technology records, and receive event swag (sticker, T-shirt, wooden finisher medallion/coaster). Virtual results are recorded but there are no awards. Swag for virtual finishers will be mailed no later than June 14. Visit the organization's website for the most recent information.