Colfax Marathon
Denver, Colorado, United States
May 16-17, 2026 - Saturday to Sunday
5k, 10mi, Half-marathon, Marathon, Relay
Race Report
Inside look at what it's like to run the Colfax Marathon
Colfax Marathon Recap 2024
Race Information
The Colfax Marathon is Denver's largest running weekend. Runners get to pick from the marathon, marathon relay, half marathon, or urban 10 miler and enjoy Denver’s iconic landmarks. Just getting started on the running scene? There's a 5k for that. Finish your 26.2 into a huge post-race party with live music, food, & drinks.
A Boston Marathon qualifier, the Colfax Marathon should be on the bucket list for every runner!
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Destination Run Pick of the Month - La Jolla Half Marathon, 10K and 5K
Get ready for San Diego’s most picturesque and beautiful point-to-point races - La Jolla Half Marathon, 10K and 5k, taking place on May 16, 2026.
Use code RGCC18 to SAVE 18% on your race entry!
Whether you choose the Half Marathon, 10K or the 5K, the course gives you the best of Southern California: sweeping ocean views, cliffs that make you look twice, and that iconic stretch through Torrey Pines where the landscape opens up and reminds you why you love to run.
The finish line isn’t just a destination; it’s a celebration! Enjoy the vibrant festival atmosphere filled with music, delicious food, and vendors showcasing the latest running gear. Relax with complimentary recovery options like massages, cold plunges, TENS units, and massage chairs.
Every runner gets a finisher’s medal, race shirt, tote bag, food bag, and free race photos, so you can keep every smile, stride, and moment of victory.
Discover what makes running in San Diego truly special—register today!
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Race Facts
Race Size: 10,000+
Elevation: Some Hills
Course Type: Road
Boston Qualifier: Yes
Kids Run: No
Where to Stay
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