Denver Colfax Marathon

The Denver Colfax Marathon is a premier running event held annually in Denver, Colorado, featuring a variety of races including a full marathon, half marathon, urban 10 miler, and a marathon relay. Scheduled for May 17-18, 2025, this two-day event showcases the city's iconic landmarks, with participants enjoying a vibrant atmosphere complete with live music, food, and post-race celebrations. The marathon is recognized as a Boston Qualifier and offers unique experiences, such as a mile through the Denver Zoo.

The event promotes community engagement and charity, making it a beloved tradition for runners and spectators alike. Visit the organization's website for the most recent information.