What distances are offered at this event?

• →13.1 miles (13er): A double loop course consisting of approximately 9 miles of crushed gravel and 4 miles of asphalt/concrete.
• →10k: A course featuring asphalt, concrete, and crushed gravel with out-and-back elements.
• →5k: An out-and-back course on asphalt, concrete, and crushed gravel.

What is the course layout for the 13er?

The 13.1-mile course begins with a one-mile uphill climb to a flat mesa. Runners proceed counterclockwise north to Harper Lake, loop the lake (approximately 1 mile), and return to the mesa's north side before completing a second identical loop. The route is designed to be runnable with minimal elevation gain. An interactive map is available via MapMyRun ↗.

What support and amenities are provided during the races?

• →13er participants receive 10 aid station passes providing water and electrolytes, with additional gels provided at miles 5 and 10.5.
• →13er participants receive 5 restroom passes.
• →Shorter races include fewer aid and restroom stations.
• →Water is provided in cups at aid stations (not at the finish line), and a bottle drop zone is available.

Are there any specific rules regarding strollers or pets?

• →Strollers are permitted, though the use of jogging strollers is recommended.
• →Dogs are not allowed to participate in the event.

What is the time limit for the half marathon?

• →The 13er has a 3:30 course cutoff, which requires maintaining a pace of at least 16 minutes per mile.

Are there any group discounts available for registration?

• →Groups of 5 or more participants can save $5 per person.

Where can I find more detailed course and race information?

• →Detailed course and location information can be found at Colorado13er ↗.
• →General event questions can be addressed via the 3 Races ↗ FAQ page.