MoMoFo 100k
Martinsville, United States • 5-6 Jun 2026
MoMoFo 100k and 20 mile Fun Run
MoMoFo is a trail event held June 5 to June 6, 2026, in Morgan Monroe State Forest near Martinsville, Indiana. The event includes an ultra trail race of 100 km and a separate 20 mile loop called the fun run. Virtual entry options and economy entries without event swag are offered.
The 100 km course is mostly single track and includes old growth forest, natural rock formations, lakes, creeks, and substantial climbing. Course breakdown is approximately 85% single track, 11% forest service road, and 4% paved road. The 100 km race has about 8,500 feet of total climbing and uses a 20 hour cutoff time.
The 20 mile fun run follows the same loop used in the 100 km event. It is one loop with a 6.5 hour time limit and the same aid station support as the 100 km.
The event also includes a fundraising effort to purchase portable AEDs for aid stations, with a stated goal of 5,000 US dollars and a noted amount already raised toward that goal. Visit the organization's website for the most recent information.