City of Trees Marathon & Half Marathon

Check out the Course Maps located under the "Event Info" tab for detailed information. Participants can look forward to receiving a coveted t-shirt hoodie shirt and other great swag from our sponsors, along with finisher food and drink. All participants will also receive a finisher's award. Register early to secure your t-shirt, as late registrants are not guaranteed a shirt. The courses utilize the Boise Greenbelt system, which may present challenges such as construction, sinkholes, flooding, and encounters with wildlife. Embrace these obstacles as part of the unique experience this course offers.