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Run 10km

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In 1979 we dreamt of attracting a few hundred of our friends to race through the streets of Boulder, Colorado to celebrate Memorial Day with our families. Fast forward almost 40 years and the BolderBOULDER has grown to become one of the largest and most highly acclaimed 10K’s in the world. Named America’s All-Time Best 10K by Runner’s World, it is the 3rd largest running race in the United States and the 7th largest in the world.

How to enter the BolderBOULDER 10K

  1. 10K run

    Run 10km
    Event passed

Event Details

What’s Included
Park It

Parking near the finish line is available on the CU campus south of Colorado Ave. and Regent Dr. Pre-paid parking is also available.

Stadium Rules
  • Bags that are clear plastic and do not exceed 12″x6″x12″ are allowed.
  • Large bags, backpacks, and strollers are not permitted. Kid carrier backpacks are allowed. We do offer a mobile locker service ($5 race day), where you drop your gear at the start (Southeast corner of 30th & Walnut) and it will be waiting for you outside the stadium when you finish.

We want everyone to enjoy a fun and safe 10k on Memorial Day. Here are the do’s and don’ts for the day:

Running with little ones

All ages are welcome at the BolderBOULDER and we encourage you to make the day a family affair! Backpacks are great for walking with kids that can’t do it on their own but remember, strollers and baby joggers are not allowed.

Anything beyond your own two feet

You can walk, jog, sprint or skip – but please don’t bring bicycles, in-line skates, Kangoo shoes or anything else that lets you roll or bounce your way to the finish.

Walking or running with friends and family

It’s great to enjoy the day with your friends and family, but keep it to three abreast or less along the course so others can get by.


Go ahead and dress up however funny, funky or silly you like, but make sure your costume doesn’t extend beyond your body or connect you with anyone else.


Fido is a great training partner, but you’ll need to leave all pets at home on race day. Trained service animals are always welcome.

BolderBOULDER 10K weather forecast

Partly cloudy throughout the day.

Predicted highs
Predicted lows

Meet the organizer

Organizer's website

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