Colorado Mountain Half+ Series
Keystone, United States • 21 Jun 2026
Colorado Mountain Half+ Series 2026
The Colorado Mountain Half+ Series consists of five distinct distance running events held across various mountainous locations in Colorado. Participants have the option to register for a bundle of three, four, or all five events. Each race in the series is organized by a nonprofit organization dedicated to supporting local youth programs.
The series includes four half marathons and one 25 km distance. The individual events are scheduled as follows:
- Estes Park Half Marathon: This race takes place at the base of Rocky Mountain National Park. The course is set within a mountain landscape known for its resident elk herd.
- Georgetown to Idaho Springs Half Marathon: This event follows a mostly downhill course. It begins at Georgetown Lake and concludes in Idaho Springs.
- Mt. Sneffels Half Marathon: Located in an area referred to as the Switzerland of America, this race features a declining course through a valley with views of surrounding mountain ranges.
- Ned-Ned Half Marathon: This trail-based event is held in Nederland. The route passes through national forests and utilizes Barker Reservoir as a backdrop.
- Lead King Loop 25K: Representing the "+" in the series title, this 15.5 mile course takes place in September. The event includes a post-race barbecue.
Participants can earn points at each race toward series awards. Registration is available for teams or individuals, and gift registrations are also supported. The series covers a total of approximately 67.9 miles for those completing all five events. Visit the organization's website for the most recent information.