Official Web Site of the Boulder Marathon and the Boulder Spring Half
10 Kilometer • 6.2 Miles
The Boulder Marathon Relay at the Boulder Marathon has been replaced with a 10 kilometer event. However, people who previously competed in the Boulder Marathon Relay as a team can still run the 10k as a group of friends. Also, for the person wishing to run a half marathon or marathon at some point, the 10k distance is a perfect starting point. The Boulder Marathon 10K will start at 8am on race day, at the same time as the Boulder Half Marathon.
