Boise River Marathon
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Event overview
The Boise River Marathon is scheduled for May 2, 2026 in Eagle, Idaho. The event program includes the following race distances:
- Marathon
- Half Marathon
- 10K
- 5K
Organizers describe the course as following the Boise River Greenbelt and state it is flat, fast, and scenic. The event includes participant items such as a finisher's medal, finisher food and drink, a classic crew neck sweatshirt, and additional swag. The race notes that registrants who sign up within two weeks of the race may not be guaranteed a shirt.
Practical details
The listed race location is 235 E Colchester Drive, Eagle, ID 83616. Registration is managed through an external partner this year and the event operates a race website at boiserivermarathon.com. The site also provides course maps, a runner's guide, transportation and lodging information, vendor details, and results pages.
The race page references local partnerships with small businesses and health and fitness organizations and supports the SoleKIDs nonprofit; the donation section shows $280 raised of a $5,000 goal. The event page notes that entry prices may change and that prices increase after November 29, 2025. Visit the organization's website for the most recent information.