This is the 17th running of the Boulder Backroads Marathon. This year's race includes a Marathon, Half Marathon, and 10k. The marathon will be a double loop of the half marathon course to make it more runner- and spectator-friendly. More information is available at

Registration Fees


Half Marathon



The Start

After party and race day expo

Finishers Medals

Backroads Marathon and Half Marathon

Boulder Backroads 10k course

Event Schedule

  • September 29 4:00 PM MDT - Last day to preregister on Raceroster

  • September 30 12:00 PM MDT - Early packet pick up at Avery Brewery

  • October 1 5:45 AM MDT - Packet Pickup and race day registration

  • October 1 7:15 AM MDT - Race Start - Marathon and Half Marathon

  • October 1 7:40 AM MDT - 10k Race Start

Contact Information

Event Location

Boulder Reservoir, Boulder, CO, United States

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