Boise River Marathon
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Event details
The Boise River Marathon takes place on Saturday, May 2, 2026, in Eagle, Idaho. The event site is listed as 235 E Colchester Drive, Eagle, ID 83616. The race day program includes the following events:
- Marathon - $60
- Half Marathon - $50
- 10K - $45
- 5K - $35
Registration for the event is handled in partnership with a local Boise company, Dionysus.
Race features
The course runs along the Boise River Greenbelt and is described as flat and fast. The event lists local vendors at the finish area and notes partnerships with local health and fitness organizations.
All participants receive a finisher's medal, finisher food and drink, and a classic crew neck sweatshirt when available. Registrants who register within two weeks of the race date may not be guaranteed a shirt; organizers state they may close registration when they can no longer provide shirts or medals. Visit the organization's website for the most recent information.