MoMoFo 100k

Martinsville, United States • 5-6 Jun 2026

Event overview

The MoMoFo event is scheduled for June 5-6, 2026 in Morgan Monroe State Forest, Martinsville, Indiana. It includes a trail 100-kilometre race and a 20-mile loop fun run. The 100k has a 20-hour cutoff. The 20-mile loop has a 6 hour 30 minute completion limit. The 100k entry is open to ages 18 and older. The event is listed as a UTMB index race for both distances.

Course and setting

The course is on trails in Morgan Monroe State Forest and features old-growth forest, natural rock formations, lakes, creeks, and significant hills. The 100k course contains about 8,500 feet of climbing. Surface composition is approximately 85% single track, 11% forest service road, and 4% paved road.

Virtual option and entries

Virtual options are offered for both distances. Virtual participants have a window from May 1 until June 7 to complete their chosen distance and must record and submit results, with GPS recommended. Virtual entries receive event swag including a sticker, T-shirt, and a wooden finisher medallion/coaster; swag will be mailed by June 14. Standard entry fees and registration deadlines apply for each event.

Distances Visit the organization's website for the most recent information.

  • 100 km
  • 20 miles

Race information

UTMB 20K UTMB 100K
100 km
Momofo100 Km
20 mi
Momofo 20 Mile Fun Run
20 mi
Virtual - Momofo 20 Mile Fun Run
Virtual - Momofo 100k
Visit the organization's website for the most recent information.
Trail runs nearby

Celebrate the new year with the First Day Trail Run and Walk at Monroe Lake, an untimed, non competitive trail event. Choose from three scenic distances, enjoy hot soup and a warming fire, and support Monroe Lake programs.

Run under the stars at Eagle Creek Park in Indianapolis on January 10, 2026, tackling nearly all single track loops by headlamp. This sold out night trail features chip timing, small wave starts, and a finisher medal for those who finish.

Run the FroMoMoFo on January 11, 2026 in Morgan Monroe State Forest, choosing a 10 mile fun run or the UTMB Index 20 mile on the scenic Three Lakes loop. Enjoy cozy on course aid stations with fireplaces and daylight only racing.

UTMB Index

Join the Bop to the Top Stair Climb in Indianapolis on Jan 17, 2026 to conquer 36 floors and support Riley Children's Foundation. Choose single, triple or team climbs and get a long sleeve shirt.