Dirty Dog Trail Marathon and Half Marathon
Boise, United States • 13 Jun 2026
Dirty Dog Trail Marathon and Half Marathon
The event returns for its 10th year in the Boise foothills on the Ridge to Rivers Trail System. It offers two distances over natural single track and some dirt road sections, with notable climbs and sustained descents on both courses. The marathon course includes significant climbing and fast downhill sections, and the half marathon follows a mix of single track and dirt road suitable for participants seeking a trail distance.
Aid stations are available at measured mile points. Half marathon aid stations are located at miles 4.5, 6.8, and 8.9. Marathon aid stations are located at miles 4.5, 6.8, 14.5, and 21.5. Stations are described as well stocked and are staffed by volunteers.
A prize of $100 is offered to the first man and the first woman to reach the top of the Hard Guy climb. The event is based at Military Reserve Flood Basin Dog Park in Boise, Idaho. Registration closes on Saturday, June 6 at 11:59 PM MT. Participants who register after Saturday, May 30 are not guaranteed an event shirt because the shirt order must be placed by that date. Visit the organization's website for the most recent information.
- Marathon
- Half Marathon