Run for No Kill Colorado through Denver’s best landmarks in the 12th Anniversary Colfax Marathon with 7 different races to choose from!! Join Colorado's big running community reunion and achieve your goals on these flat courses!

7 races from the 5k to the full marathon.

Don't want to run?   Its easy to get your fundraiser going.  You can simply send friends to

https://www.razoo.com/story/No-Kill-Colorado to donate to the group and support runners running for the lives of Colorado Pets.

Let's make Colorado the Safest State for Homeless Pets!