Run the Boulderthon 10K in Downtown Boulder, CO

A fun, fast, all-roads 10K in Downtown Boulder!

Join us for the largest running weekend in the U.S., on Sunday, September 29th, 2024 for the Boulderthon 10K in Boulder, Colorado. The course runs through the streets of Boulder, allowing you to take in the beautiful scenery, before winding you to Downtown Boulder for an incredible finish on the historic Pearl Street Mall! Boulderthon is the perfect Fall race to test your end of the season fitness!

Boulderthon - Boulder Marathon - 10k Course Map

Boulderthon 10K

Date: Sunday, September 29th, 2024

Start Time: 8 am

Boulderthon 10K Registration

Registration for the Boulderthon 10K is now open.

Boulderthon also offers a Kids Run, 5K, Half Marathon and Full Marathon.


Event Day

  • Boulderthon offers Early Bib Pickup (open to all) beginning Saturday, 9/22/24 through Thursday, 9/26/24 at 2pm at all Colorado Fleet Feet locations during their normal hours.
  • Finisher Shirts will not be available at Early Bib Pickup. Participants who pick up their packet at Early Bib Pickup can pick up their race shirt after they complete their race on Sunday 9/29/24.
  • Our Official Expo & Bib Pickup will take place on Pearl St Mall between 14th & 15th, on Friday, 9/27/24, from 2pm-6pm, and Saturday, 9/28/24 from 10am-6pm.

This year, Boulderthon features its first-ever Start and Finish Downtown.

Our Start Village is hosted on the Pearl Street Mall, between 13th and 15th.

The Start Line is at 21st and Pearl. The Finish is at 15th and Pearl. 

Here are the best ways to get to the Start.  For questions, please contact support@boulderthon.org

1. Take an Uber

Use Our Designated Uber Drop Off Lanes

Please enter address 1400 Walnut St, Boulder CO 80302 into Uber (the start of the Drop Off Lanes) to Uber to the Start Village Presented by Uber.

*Note- please use these lanes for all runner drop off.

Try Uber One Membership with a Free 3-Month Trial

$0 Delivery Fee and up to 10% off eligible orders, plus 6% Uber Cash back on eligible rides.

Click link for terms & sign up now.

Terms apply. See uber.com/uberone

2. Carpool with our partner, TreadShare

Embrace sustainability and community spirit by carpooling with TreadShare to Boulderthon!


  • Download the App 

  • Create a profile

  • Book a ride or post a drive in just a few clicks to Boulderthon

  • Earn $5 for completing a carpool - redeem by sending the promo code: BOULDERTHON to info@treadshare.com after completing one ride or drive by 11:59pm MDT on 10/8/23.

Reduce your carbon footprint, ease congestion, and make a positive impact on the event's accessibility!

3. FREE Parking!

Please reference our FREE Parking Garage Map.

Please note, these garages will fill up first and we suggest arriving at least 2 hours prior to the Start.

All parking is FREE in Downtown Boulder on Sundays. See below for the best places to park!

  • Gear Check is available at the start
  • Gear Check bags will be available at Gear Check
  • We will transport anything you put in your Official Gear Check Bag to the Finish Area for you.
  • Please plan for chilly weather! Colorado can be chilly in October, with lows of 40 degrees in the morning. Plan on extra layers and check them into your Official Gear Check Bag.


  • There will be port-a-potties on course. Please respect our community and utilize these for your needs.


  • Water Stations will be available throughout the course. Please see maps for specific locations.


  • A number of highly trained physicians, nurses, physical therapists and other medical personnel will be on hand throughout race weekend.
  • There will be a number of mobile units moving throughout the course. These units will be staffed by paramedics, EMTs and marathon staff.
  • There will also be ambulances stationed at the finish line and throughout the course.

  •  Cheer runners on at the Finish! First 250 spectators will get cowbells. Join the fun at Pearl & 15th St, including our first-of-its-kind finish at the Pearl Street Mall! 

  • You can also cheer runners on throughout the course at any of our Hydration Stations!

  • In addition, our Xcel Power-Up Cheer Station information will be coming soon!

  • Our Official After Party will be at Avanti. Celebrate your incredible accomplishment with the best views in town at the Avanti roofdeck!