Boulderthon 5K and 10K Course Preview

Our course preview runs will begin departing in waves from Fleet Feet Boulder at 9 AM. The 5K course preview will do a 2-mile out-and-back and the 10K course preview will do a 3-mile out-and-back. There will be no aid on course, so please bring whatever hydration and nutrition you plan on needing with you.

5K Course Preview Route

10K Course Preview Route

Please bring the QR Code that is issued upon checkout, as participants will be required to check-in at the time of the event.

This event is a course preview, not a race. There will be no aid stations, no course marshals, and no road closures. Participants are responsible for their own hydration, nutrition, and safety throughout the route.

The course remains open to the public, so please be courteous and share the bike paths and roads with pedestrians, cyclists, and other trail users. When running on roads, obey all traffic laws, use designated crosswalks where available, and yield to vehicle traffic. Stay alert, avoid distractions, and be aware of your surroundings at all times.

By participating, you acknowledge that you are responsible for navigating the course safely and exercising good judgment in all traffic and shared-use areas.

Get a chance before and after the event to get to know some of our partners such as Precision Fuel & Hydration, lululemon, Boulder Community Health, Send Bars, Ultimate Longevity Center, Alive & Well, Cheribundi and more!

There is very limited parking at Fleet Feet Boulder and its complex. We want to be mindful of our neighboring businesses, so we ask that you try to park in the neighborhood near the store or in one of the very large lots on the southeast or northeast corners of 28th and Pearl. Carpool if possible!