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 location is listed as 235 E Colchester Drive, Eagle, ID 83616. Registration for the race is handled in partnership with a local company called Dionysus.
Distances and entry fees:
- Marathon - $60
- Half Marathon - $50
- 10K - $45
- 5K - $35
Course and race amenities
Organizers describe the course as running along the Boise River Greenbelt and characterize it as flat, fast, and scenic. The event page notes involvement from local businesses, with vendors at the finish line, race-day sponsors, and community events connected to the race.
All participants will receive a finisher's medal, finisher food and drink, and a classic crew neck sweatshirt as part of the race swag. The race notes that registrants who sign up within two weeks of the event may not be guaranteed a shirt; organizers may close registration if they cannot supply shirts or medals. The event page also references course maps, a runner's guide, transportation and lodging information, results, photos, and volunteer opportunities. Visit the organization's website for the most recent information.