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!

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