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WELCOME TO THE

HIGH LONESOME 100

July 18-19, 2025

A FREESTONE ENDURANCE EVENT

 
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WELCOME TO OUR RACE! WE’RE GLAD YOU FOUND US

The High Lonesome 100 is a high flying endurance race in the Sawatch Range of the Colorado Rocky Mountains. With 23,500' of vertical gain, reaching an elevation of 13,150', it's a hell of a course. The race runs in a loop through some of the most beautiful singletrack in the state, and takes runners on the National Continental Divide and Colorado Trails, through two ghost towns, over five alpine passes, through remote basins, over soaring ridges, all in 37 hours. It's also run and staffed by experienced and quality individuals, so you'll get to be a part of a wonderful community. If you're looking for a true mountain race, created in the spirit of the classic 100 milers, then look no further. We hope you will join us in 2024 for our seventh year!


High Lonesome is now part of the Trail Mix Fund!

In an effort to improve diversity in trail racing and remove a potential barrier for the under-served and under-represented, the Trail Mix Fund pays the race registration fee for runners who cannot afford it or aren’t sure they belong in the sport. We also believe that there are more BIPOC & LGBTQ+ people who would like to race and would enjoy being part of the community but aren’t comfortable taking that step of signing up to race. Waiving the registration fee alone won’t solve this problem, but maybe it can help some. Freestone Endurance's partnership with the Trail Mix Fund is new for 2024, but we hope you'll consider donating or applying!

RUNNERS

Interested in running the race? You can find out about the registration process, requirements, and our qualifier status in the registration section. You can find the Runner’s Guide, and the Runner’s Bill of Rights, and much, much more in the runners section. Don’t forget to check out the rules and required gear before signing up; it’s all important stuff. Check out the previous results, detailed splits, and the course record. If that fails, just focus on all the amazing images of the course!

COURSE

Want to learn about the course? Start by reading the course overview and checking out the elevation profile and course map. You can also find a massive PDF of the full course, as well as GPX/KMZ files, and easy-to-print 8.5x11 course quads. Once you’re familiar with the course, you can read about the aid stations and find driving directions for crews as well as deep-dive into the Crew Manual. Lastly, you can read our course description to see what makes our course so special.

VOLUNTEERS

Want to volunteer at the race? GREAT! We need around 150 volunteers to do everything from course marking and sweeping, to running aid stations and communications. We also need EMTs, medics, and nurses to be a part of our medical team. Depending on what you’re interested in doing, you can read more about the various roles, see available shifts, and sign up to volunteer. You can also find the Volunteer Manual and driving directions to aid stations.

 

The High Lonesome 100 is organized by an all-volunteer team of talented and dedicated athletes. You can read about how our race got started, learn about the directors, coordinators, and aid station captains. Want to know what we stand for? Read our value statement. For an even deeper dive, you can read about where the name and logo came from and what we’re working on next.

 
 
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SPONSORS

We have some incredible sponsors at High Lonesome, and we’re not shy about it. You can learn more about our presenting sponsor, Laws Whiskey House, and the many other supporters who help us put on our race. You can also learn about our partnering non-profits that we work with. Are you interested in sponsoring the race? Find out more about how to partner with us and what we can do to help your brand.

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