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Boulder Backroads Half Marathon and 10k

First-Ever Finish on Pearl Street | Post-Race Party | Epic Course

Boulder Backroads Half Marathon & 10k is now The Boulderthon™


We are excited to announce that our race series will continue its local tradition, and will feature an expanded field and new course for 2020. Run the Inaugural Boulderthon™!


Boulder's First & Only Downtown Marathon & Half Marathon with a Finish on Pearl!


10.11.20 - Columbus Day Weekend



Registration just opened!



Register by 2/29 to save $10 with PROMO CODE BB10.

Registration fees

Prices are inclusive of mandatory charges, items, and fees

Half Marathon Closed

Online registration closed

    1. $82.23
      Nov 15 – May 31
    2. $98.28
      Jun 1 – Jul 31
    3. $108.98
      Aug 1 – Sep 26

10k Closed

Online registration closed

    1. $39.44

      early bird

      Nov 15 – May 31
    2. $50.14
      Jun 1 – Jul 31
    3. $55.49
      Aug 1 – Sep 26

Volunteers

The Start

After party and race day expo

Finishers Medals

Backroads Marathon and Half Marathon

Boulder Backroads 10k course

Event schedule

  • Thu, September 26, 2019 11:59 PM - Last day to preregister on Raceroster
  • Fri, September 27, 2019 12:00 PM - Early packet pick up In Motion Running
  • Sat, September 28, 2019 5:45 AM - Packet Pickup and race day registration
  • Sat, September 28, 2019 7:15 AM - Race Start - Half Marathon
  • Sat, September 28, 2019 7:30 AM - 10k Race Start

Contact information

Event contact
Henry Guzman
Email
hjgrun@gmail.com
Phone
+1 303-517-7046
Website
Visit website