MoMoFo 100k
Martinsville, United States • 4-5 Jun 2027
MoMoFo 100k and 20 mile Fun Run
The MoMoFo weekend in Morgan Monroe State Forest near Martinsville, Indiana offers two trail events on June 4–5, 2027: a 100 km race and a 20 mile fun run. Economy registration options without swag are listed alongside the standard events.
The course is a roughly 20 mile loop that the 100 km field completes three times while the fun run completes one loop. The route is largely single track (about 85%), with 11% forest service road and 4% paved road. Total climbing for the 100 km is approximately 8,500 feet. The forested course features old growth trees, natural rock formations, lakes, creeks, and notable hills; southern Indiana summertime heat and humidity are typical conditions.
Time limits are provided: a 20 hour cutoff for the 100 km and a 6 hour 30 minute limit for the 20 mile loop. Aid station support on the loop is the same for both events. The 100 km entry is open to ages 14 and older. Both the 100 km and the 20 mile run are listed as UTMB index events and award index points.
Organizers list finishers items such as shirts, stickers, a coaster, and drinkware, and they are conducting a fund drive with a $5,000 goal to purchase portable AEDs for aid stations. Visit the organization's website for the most recent information.