We look forward to running with you on April 25th, 2021! Read the latest updates here.


Postponement Announcement from the Race Director, 9/4/20

We are sorry to have to make the very difficult, but necessary announcement that Boulderthon's October 11th, 2020 edition has been postponed to April 25th, 2021. Though we have worked tirelessly over the last few months to produce Boulderthon safely this Fall, we have ultimately had to make the decision for the health & safety of all our runners, staff, and volunteers who have so generously and enthusiastically believed in our race and have signed up to participate.

We could not be more grateful for your support, and like all of us, never expected to have to face this in our first year as we launched our community's new signature Boulder Marathon series. As I'm sure many of you know from our correspondence together and the amazing training runs you have shared with us, please know that this decision did not come lightly, and the Boulderthon team has truly explored every angle and possible format to attempt to bring our new race series and downtown marathon experience to life this Fall.

For all those who have put the work in already with those training runs, you can still register for the #VirtualBoulderthon and run from anywhere in October, and earn that coveted Finisher Medal and Finisher T-Shirt. You may also now request your new Race Date for the next in-person editions of Boulderthon, which will occur on April 25th, 2021, October 10th, 2021, and October 9th, 2022.

We truly appreciate all your support, and please don't hesitate to reach out with any questions at hi@boulderthon.org. -- Phil Dumontet, Race Director