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Fox Valley Marathon

St. Charles, IL

Race Dates

2017: TBD
2016: Sunday, September 18, 2016

Course Information

Profile: Mostly Flat
Type: Out and Back
Surface: Road/Pavement
Certified?: Yes

Race Day Weather

Mean Temp.: 63°F (17°C)
Average High: 74°F (23°C)
Average Low: 51° F (10°C)

Historical Weather

PR Score & Course Score

PR Score: 97.87
Course Score: 99.22

Race Size

2016: 718 Finishers
2015: 880 Finishers
2014: 989 Finishers

BQ Percentages

2016: 9.1%
2015: 10.1%
2014: 9.6%

Miscellaneous Information

Pace Groups?: Yes

Marathon Pace Bands

See what splits you need to run for the Fox Valley Marathon or other marathons, adjusted for the specific terrain of each marathon and your goal time, and pacing strategies.

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Course Description

The flat Fox Valley Marathon course runs on the town streets and bike paths along the Fox River.

Marathon Rankings

The Fox Valley Marathon was the 100th largest marathon in the U.S. last year and was the 98th largest in 2014.

This year 9.1% of finishers qualified for the Boston Marathon and 10.1% of runners qualified for Boston in 2015.

This gives the Fox Valley Marathon the 186th highest percentage of Boston Marathon qualifiers in the U.S. last year and the 164th highest percentage so far in 2016.

Its Course Score of 99.22 ranks it as the 141st fastest marathon course in the U.S. and the 3rd fastest course in Illinois.

The typical race time temperature and humidity levels are above the ideal range for optimal marathon performance. This, coupled with the Course Score, gives the Fox Valley Marathon a PR Score of 97.87. This PR Score ranks it as the 264th fastest marathon in the U.S. and the 8th fastest in Illinois.

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

Elevation Chart

Max Elevation: 732 feet (223m)
Min Elevation: 631 feet (192m)


Ratings & Reviews for the Fox Valley Marathon

5 Stars from 1 Reviews

review of 2013 Fox Valley Marathon.   

5 / 5 Stars


Beautiful course up and down the river. Nice and flat, no tight spots. Very well organized. Tons of support from volunteers and local community spectators. Plenty of hydration options throughout the course. Plenty of porta-potties. Very attractive high tech T-shirt and medal.

Race Tips

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

Finish Time Equivalent

If you ran the Fox Valley Marathon in 3:01:00, 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.