MoMoFo 100k and 20 mile Fun Run
MoMoFo 100k and 20 mile Fun Run is a running, trail running, and ultra race on June 4–5, 2027 in Martinsville, IN, with entry fees from $50 to $150.
- Date
- June 4–5, 2027 (306 days to go)
- Price
- $50–$150
- Sports
- RunningTrail RunningUltra
From the Organizer
This 100km trail race will prove that there’s more than just corn in Indiana! Situated in Indiana’s beautiful Morgan Monroe State Forest, this evening-start event will have plenty to offer throughout the night with its old growth forests, natural rock formations, lakes, and creeks. Oh, and did we mention the hills? With about 8,500 feet of climbing—yes, over 8.5k of climbing!—in addition to southern Indiana’s typical summertime heat and humidity, this race is tougher than you’d think. Comprised of 85% single track, 11% forest service road, and 4% paved road (but with a generous cutoff time of 20 hours), we assure you that you won’t be disappointed.
For those less adventurous trail nuts we offer up our “fun run”. If you aren’t quite up for the full 100km we have a 20 mile loop for you to “enjoy”. This run will start Saturday at 8:30am. You will have a SUPER generous 6 hours and 30 minutes to complete one loop. This is the same loop as the 100k folks with the same unbelievable support at each aid station.
We invite you to experience true Hoosier hospitality with our fun and friendly trail running community.
Come help make this a trail party…WooHoo!
Events
Weather
Typical Conditions
It's too far out for a forecast, so here's what weather on this date is normally like in the area. A race day forecast will replace this as race week approaches.
Typical High
78°
Typical Low
57°
Chance of Rain
39%
Based on US Climate Normals data from Martinsville 2 Sw, 5 mi from the venue.
Host City
About Martinsville, IN
City Elevation
793 ft
Nearest Airport
IND
Indianapolis International Airport · 19 mi
Time Zone
Eastern Time
From Endurance Grid
Line up lodging and travel early to lock in your race weekend.
Race Location
Your Next Start Line
What Are You
Waiting For?
Every finish line starts with a single decision. Claim your spot at MoMoFo 100k and 20 mile Fun Run, put it on the calendar, and turn “someday” into a start date.
306
Days to train
- Race
- MoMoFo 100k and 20 mile Fun Run
- Date
- June 4–5, 2027
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From Endurance Grid
About These Sports
This race spans more than one sport — here’s a guide to each, so you can understand what’s involved and decide if it’s the right fit. For course distances, logistics, and race-day specifics, always defer to the race organizer’s event page.
Running
From 5K to marathon, running races are an accessible entry point into endurance sport. There's a distance for every fitness level and a community at every start line.
Trail Running
Running off-road — dirt, singletrack, and mountain paths — from 5Ks to ultras. The terrain makes for an exciting twist and adventure in your running journey.
Ultramarathon
An ultramarathon is anything beyond the standard marathon — 50K, 50-mile, 100K, 100-mile, and timed events. Crossing the line is less about speed and more about not quitting.
Coming Up
More Running races near Martinsville, IN
Color Me Plainfield 5K
5K · From $30 · Talon Stream Park Shelter
15 miles away
Back Your Badge Marathon
1 Mile · 5K · Half Marathon · Marathon · From $40 · Richard A. Carlucci Recreation & Aquatic Center
15 miles away
Wine at the Line
5K · From $30 · 6964 Whiteland Rd
13 miles away
Morgan County Fall Foliage Festival 5k 2026
5K · From $25 · 1459 E Columbus Street
5 miles away
Plan your trip
Make it a Racecation
Coming from out of town? There's more to Martinsville than race day. We'll help you line up nearby lodging, flights, a rental car, and things to do so you can make the most of your racecation.
Plan your trip to MartinsvilleFrequently Asked Questions (FAQs)
What is the MoMoFo 100k and 20 mile Fun Run?+
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MoMoFo 100k and 20 mile Fun Run
Jun 4, 2027