The Denver Colfax Half Marathon offers a unique urban running experience in the heart of Colorado’s capital. Starting near City Park, the course takes runners through diverse neighborhoods, a fire station (yes, really!), and even onto Colfax Avenue, the longest commercial street in the U.S. The mile-high altitude adds an extra challenge, but the stunning Rocky Mountain backdrop makes it all worthwhile. With a mix of city streets, park paths, and enthusiastic onlookers, this half marathon is an u
Adjusted Time
1:42:55
Time difference: -2.1 minutes compared to a flat, road, temperate course.
| Surface | Road |
| Elevation Gain | 80m |
| Elevation High | 1633m |
| Elevation Low | 1600m |
| Predicted High | 23°C |
| Predicted Low | 7°C |
| Chance of Rain | 55% |