Onward Shay! Boise Marathon

This is a Boston-qualifying marathon located in the heart of Boise, Idaho. The course weaves through scenic neighborhoods, the Boise greenbelt, and the vibrant downtown area.

Get the marathon map >

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  • Qualify for Boston with the flat, fast course!

  • Fun race - this is a dress-up marathon! Not only is the race over Halloween weekend, but our theme is also Wizard of Oz

  • Run for charity! All proceeds from our race benefit the Multiple Myeloma Research foundation as well as local charities

  • We have flattened out our course for 2018, now with only 300 feet of gain on the entire marathon course

  • The steepest climbs are the footbridges crossing the Boise River!


  • Dec 1 - Dec 31: $50

  • Jan 1 - April 30: $80

  • May 1 - August 30: $95

  • Sept 1 - Race day: $120


2017 Onward Shay Marathon Course Map*


*Subject to change. New course map will be posted closer to race weekend.

Course certification number: ID17008LAB