Official Course Map

Note: The race courses for the Boulder Marathon and the Boulder Half Marathon are primarily on hard-packed dirt roads. If you're running or walking the Boulder Half Marathon, the section of the course on Niwot Road is paved. If you're running or walking the Boulder Marathon course, the section of the road on Nelson road is paved. The start/finish for both races is on a paved road at the City of Boulder Reservoir (but this section is only a quarter mile – until the runners and walkers exit the Boulder Reservoir). The rest of the marathon and half marathon courses are on dirt (back)roads.

Course Map for the 2010 Boulder Marathon, Half Marathon & 10 Kilometer: