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.

Boulder Marathon's Jeff Mason agrees not to run marathons, races for seven years

Excellent event, thank you for bringing it back!

Gorgeous course, great post-race beer & food.

Very well organized and the view was amazing

Excellent race, with poor logistic support

Don't do it!  Suggestions for better CO Marathons

Fun race; roads should have been 100% closed

I love the back roads and didn't expect spectators

Course was good. Post-race offerings not so much.

Much improved.  A few more improvements needed.

disappointing as compared to previous years

I liked the dirt-packed roads, tech shirt, weather

Best Marathon and Half Marathon in the Nation!

Good race that still needs to work on a few things

Great, but I really only wanted to do 26.2!

a very well organized race that just gets better

Great Little Race for Experienced Runners

A beautiful course and well-organized race

Boulder Backroads Marathon

Marathon Results