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Race Dates

2018: Sunday, October 28, 2018
2017: Sunday, October 29, 2017

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

2017: 96 Finishers
2016: 206 Finishers
2015: No Results

BQ Percentages

2018: N/A
2017: 13.5%
2016: 8.3%

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 379th largest marathon in the U.S. last year and was the 261st largest in 2016.

Last year 13.5% of finishers qualified for the Boston Marathon and 8.3% of runners qualified for Boston in 2016.

This gives the Onward Shay! Boise Marathon the 127th highest percentage of Boston Marathon qualifiers in the U.S. last year and the 271st highest percentage in 2016.

Its Course Score of 99.00 ranks it as the 200th 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 139th 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 2 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.)

review of 2016 Onward Shay! Boise Marathon.   

4 / 5 Stars


Overall this marathon was well organized and well covered by both police and volunteers. Plenty of rest and water stops. Although it rained and is prone to do this at this time of the year here, the race course itself goes through very beautiful neighborhoods, has the beautiful backdrop of the Rocky Mountains and is well attended. The only negative comment I would have is they need to start on time irregardless and try and figure ot how to get more people out to cheer. Having past runners who have had successful careers in the sport there to cheer you on and run in some cases, was an added bonus. Their insights and well wishes were very much appreciated by all.

Race Tips

If not competitive, run slow and steady at a comfortable pace that enables you to enjoy the scenery and course while still enjoying the distance and ambiance. Make an effort to meet with older runners prior to the race and get some encouragement and insight into proper running techniques. Run at pace you can maintain and be sure to take water and fluids and snacks as necessary so as to not dehydrate or cramp. Do proper distance training weeks prior to the actual race building up your mileage weekly.

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

You need to arrive at least an hour prior to the race in order to get parked, stretched and acclimated to the area prior to the run. There are a number of hotels within a couple of miles of the course which can be a bit pricy but it you go alitle southwest of the run uptown you can find some reasonably priced hotels just off 84 near the airport and further west along West Overland St. Parking is quite large near the race site and the college is within a mile of the start which also hosts a number of parking spots.

Finish Time Equivalent

If you ran the Onward Shay! Boise Marathon in 3:24:00, 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.