The HM100 is October 24th, 2025-5:00AM at Haw Creek Falls Recreation Area.
All distances are UTMB Index Races
The Hare Mountain 100 is a point-to-point, graduate level run through the most isolated, rugged terrain in Arkansas. It is extremely difficult. Big climbs and relentless smaller, steep climbs in between.
The Ozark Highlands Trail is hiked by thousands of people every year. While very remote, it is not a primitive, unmarked trail by any means. It is a National Scenic Trail maintained by volunteer members of the Ozark Highlands Trail Association.
But, please do not sign up if you are not comfortable with:
-being self sufficient
-limited to no extra marking beyond trail blazes and wooden trail signs
-navigation
-carrying a little extra gear for your safety.
-long distances between major aid stations
A satellite GPS tracking device and the course GPX downloaded is a requirement. It will be checked during check-in to make sure you have it. While the trail is marked very well with white blazes for the main trail and blue blazes for the spurs, turns can be missed. Sometimes trees fall where the trail turns. Sometimes the tree with the blaze falls. Sometimes leaves cover the trail. Sometimes it's foggy. It's the wilderness. It's a raw and incredible experience. Be confident you can stay/get back on course.
This is a 100 mile adventure run that incorporates 2 scenic spur loops along the Ozark Highlands Trail. It is located in the Northwestern part of Arkansas across the Boston Mountain segment.
Hare Mountain is the highest point on the OHT at ~2400 feet. This segment covers 164 miles of rocky, steep and rugged hardwood, cedar and pine forests. We’re utilizing 100 miles of the most difficult sections.
There are several creek crossings, amazing wildlife, incredible fall colors, waterfalls, bluffs and beautiful sandstone outcrops.
We grew up on this trail. It means a lot to us to bring such a wild and challenging experience to runners.
Measurements taken by GPS and topographic mapping have put elevation gain between 20,000-24,400 feet. It depends on the device/app. Runners will have 38 hours to complete the 100 mile run.

In 2026 we are planning to add a 200 mile run the same week(end) as the 100. Details will be available as course comes together with the forest service.
https://www.facebook.com/groups/216147591049546/
https://www.instagram.com/haremountain100/
https://ultrasignup.com/register.aspx?did=103630