Registration for Boulderthon 2023 is now open! After nearly tripling in size and selling out last year, Boulderthon has instituted a new 5,000 runner cap and is expected to sell out again this year. Register today.
Finish line of Boulderthon at the end of the street

Boulderthon Kids Fun Run in Boulder, CO

Join us on Sunday, October 8, 2023 for the second-annual Boulderthon Kids Fun Run in Boulder, Colorado. The course starts and ends at 17th and Pearl with an incredible finish on the historic Pearl Street Mall! The Boulderthon is the perfect introduction to racing for your little ones!


Boulderthon Kids Run Information

Date: Sunday, October 8th, 2023

Start Time: 8:15am

Time Limit: None

Distance: 0.5 miles

Elevation Gain: 32 feet

Course Map:

Course Map

Boulderthon Kids Run Registration

You can register your child online or show up early and register on the day of the race. Parents can run for free with their kids!

Boulderthon also offers a 5k, 10k, Half Marathon and Full Marathon.


Boulderthon Kids Run Race Packet Pick Up:

  • Boulderthon offers Early Packet Pickup (open to all) beginning Saturday, 9/30/23 through Thursday, 10/5/23 at Boulder Running Company, 2775 Pearl St, Boulder, CO 80302, during their normal hours.

  • Our Official Expo & Packet Pickup will take place on Pearl St Mall between 14th & 15th, on Friday, 10/6/23, from 2pm-6pm, and Saturday, 10/7/23 from 10am-4pm.

Getting There:

  • The race starts and ends at 15th and Pearl. You are welcome to get dropped off or park in Downtown Boulder. See below for the best places to park.

Where Do I Park?

Here are the BEST FREE GARAGES to park in on Boulderthon Race Weekend. Please note that garages are free on Saturdays and Sundays in Downtown Boulder, but street parking is only free on Sundays.Parking Map


Gear Check

  • There is no gear check for the Kids Run as it starts and ends in the same location.