What Is BOLDERBoulder 10K and What Does bolderboulder.com Offer?
Updated
bolderboulder.com is the official website for the BOLDERBoulder 10K race organization, and it serves as the information and registration hub for its events. The page currently featured on the site promotes the COLDERBolder 5K, a winter running event held on the CU Campus, with registration open to the public starting October 1st. If you're looking to register for a race, check event details, or understand how the COLDERBolder works, this site is where you'll find that information.
What the Site Covers
The website provides details on the COLDERBolder 5K, including its race structure, registration process, and what participants receive. It also links to registration and offers guidance on policies like rolling registration to the next year.
Key Event Details
- Event: COLDERBolder 5K
- Location: CU Campus
- Date: Saturday, Dec. 5th
- Registration: Opens to the public October 1st; no race day registration
- Availability: The event sells out every year
Race Categories and How They Work
The COLDERBolder 5K includes multiple ways to participate, structured to give runners a fair shot at recognition based on their pace.
Invitational Races
There are 13 invitational races organized by pace. If you ran a previous COLDERBolder or BOLDERBoulder, you'll be invited by email. For example, if you finished the BOLDERBoulder in 52 minutes, your race includes only people who finished between 52:00 and 53:59. Everyone earns a medal, but the top 3 finishers in each race earn a special Cold Medal.
Open Race
This race is for those who don't qualify for an invitational race or simply want a more casual experience. You run at your own pace and can participate alongside friends or family.
Walking Wave
The Walking Wave is a festive stroll through CU campus and the winter wonderland. It is not a race—there are no 1st, 2nd, or 3rd place Cold Medals—but all participants receive a medal.
Virtual Race
Virtual registration is available for those who can't attend in person.
What the $66 Package Includes
The $66 package covers:
- Official COLDERBolder Shirt & Winter Beanie
- Race Medal (after completing your 5K)
- Official COLDERBolder Bib with RFID Timing Tag
- Holiday Finish Fest: Burritos, Doughnuts, Coffee, Hot Cocoa and More!
Virtual registrations are also available.
Registration Policies to Know
- No race day registration. The event sells out every year, so register early.
- No hidden fees. The site states this explicitly.
- Can't make it? If you sign up and can't participate, you can roll your registration to next year for $30.
Who This Is For
This site is for anyone interested in the COLDERBolder 5K or other BOLDERBoulder events—whether you're a previous participant eligible for an invitational race, a casual runner looking for an open race, someone who prefers a walking wave, or a remote participant choosing the virtual option. If you want to register, review race categories, or understand what your entry fee covers, bolderboulder.com is the place to do it.