Denver Colfax Marathon

May 17, 2026

Start Time : 6:00 a.m.
Number of Places : 2,300

The Denver Colfax Marathon is a highly regarded race. It is one of eight races taking place over the Run Colfax weekend, two of being a half marathon and a marathon relay.

Denver Colfax Marathon Route
Starting and finishing in Denver's City Park, the Denver Colfax Marathon takes runners on a memorable run through the city of Denver, through Denver Fire Station #1, via many beautiful neigborhoods, into historic Lakewood and along the vibrant Colfax Avenue, all with amazing views of the impressive Rocky Mountains.

Denver Colfax Marathon Entry
* Entry Fee : TBD
* Registration Deadline : TBD

Contact Details
Contact : Race Director
Email : info@runcolfax.org
Website : https://www.runcolfax.org

Further Information
* Cut-off Time : Runners will be expected to finish within 6 hours.
* Boston Qualifier : Yes