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Race Dates

2017: Sunday, October 29, 2017
2016: Sunday, October 30, 2016

Course Information

Profile: Mostly Flat
Type: Loop
Surface: Road/Pavement
Certified?: Yes

Race Day Weather

Mean Temp.: 47°F (8°C)
Average High: 57°F (13°C)
Average Low: 37° F (2°C)

Historical Weather

PR Score & Course Score

PR Score: 99.00
Course Score: 99.00

Race Size

2016: 206 Finishers
2015: No Results
2014: No Results

BQ Percentages

2017: N/A
2016: 8.3%
2015: N/A

Miscellaneous Information

Pace Groups?: No

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Course Description

The mostly flat to gently rolling Onward Shay! Marathon starts and finishes in downtown Boise alongside the Boise River. Runners pass by Bpise State Universsity, travels through downtown Boise, passes by the State Capitol building and then travels goes through several Boise neighborhoods, including Harrison Blvd. and Warm Springs Blvd., up 13th St. and through Hyde Park and back.

Marathon Rankings

The Onward Shay! Boise Marathon was the 268th largest marathon in the U.S. last year.

Its Course Score of 99.00 ranks it as the 194th fastest marathon course in the U.S. and the 3rd fastest course in Idaho.

The typical race time temperature and humidity levels are within the ideal range for optimal marathon performance. This, coupled with the Course Score, gives the Onward Shay! Boise Marathon a PR Score of 99.00. This PR Score ranks it as the 132nd fastest marathon in the U.S. and the 3rd fastest in Idaho.

Learn more about PR Scores and Course Scores on the FAQ page.

Elevation Chart

Max Elevation: 2761 feet (841m)
Min Elevation: 2642 feet (805m)


Recent Onward Shay! Boise Marathon Reviews

4 Stars from 1 Reviews
View all Reviews

review of 2016 Onward Shay! Boise Marathon.   

4 / 5 Stars


Too late of a start (noon) and then that was delayed, well organized otherwise and a great course.

Race Tips

Logistical Tips (Hotels, Restaurants, Parking, Discounts, etc.)

Finish Time Equivalent

If you ran the Onward Shay! Boise Marathon in 4:05:00, what would your time in the Boston Marathon be?

See how your race times would compare on other marathon courses using the Marathon Time Converter Tool.