Established in 2017
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.
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 began in 2024, and 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.
