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
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-
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$82.23Nov 15 – May 31
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$98.28Jun 1 – Jul 31
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$108.98Aug 1 – Sep 26
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10k Closed
Online registration closed-
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$39.44
early bird
Nov 15 – May 31 -
$50.14Jun 1 – Jul 31
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$55.49Aug 1 – Sep 26
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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
- Phone
- +1 303-517-7046
- Website
- Visit website
