Run the beautiful rural backroads of Boulder, Colorado. Start and finish at the Boulder Reservoir. 85% of course is on soft-pack county dirt road. Fully supported; great food and drink at the finish, including local microbrews! Half marathon is out and back; full is a loop course...both are relatively flat, with a few gentle hills. A great first-timers race. Register today!

Boulder Backroads Marathon

Human Interest Story

Both the Boulder Backroads Marathon  which took place Sept. 19  and last weekends Boulder Rez Marathon celebrated their inaugural events this year, filling the gap left by the Boulder Marathon in the wake of its race director being banned from managing races after two cancelled events.

Boulder making a return to the marathon circuit

Boulder Marathon Director Jeff Mason has agreed to not run any marathons or races in Boulder County for the next seven years, resolving part of a lawsuit filed against him by the Boulder County District Attorney's Office after two cancelled races.

Marathon Summary

Marathon Results