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Naperville Marathon

Naperville, IL

Race Dates

2017: TBD
2016: Sunday, October 23, 2016

Course Information

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

Race Day Weather

Mean Temp.: 50°F (10°C)
Average High: 60°F (15°C)
Average Low: 40° F (4°C)

Historical Weather

PR Score & Course Score

PR Score: 98.88
Course Score: 98.88

Race Size

2016: No Results
2015: 819 Finishers
2014: 1,346 Finishers

BQ Percentages

2016: N/A
2015: 10.6%
2014: 10.9%

Miscellaneous Information

Pace Groups?: Yes

Race Day Weather Forecast

Race Day Temperatures High: 71°F  (22°C)
Low: 44°F  (7°C)

Race Start Conditions

44°F  (7°C)

S 3 mph 

PR Score
(Normal Score)


Course Score


The typical race time temperature and humidity levels are within the ideal range for optimal marathon performance.
Go for it!!!

Course Description

**New Course for 2016 (updated with revised course released in October)**

Marathon Rankings

The Naperville Marathon was the 105th largest marathon in the U.S. last year and was the 79th largest in 2014.

Last year 10.6% of finishers qualified for the Boston Marathon and 10.9% of runners qualified for Boston in 2014.

This gives the Naperville Marathon the 172nd highest percentage of Boston Marathon qualifiers in the U.S. last year and the 161st highest percentage in 2014.

Its Course Score of 98.88 ranks it as the 200th fastest marathon course in the U.S. and the 9th fastest course in Illinois.

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 Naperville Marathon a PR Score of 98.88. This PR Score ranks it as the 139th fastest marathon in the U.S. and the 5th fastest in Illinois.

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

Elevation Chart

Max Elevation: 753 feet (229m)
Min Elevation: 643 feet (196m)


Ratings & Reviews: None

Finish Time Equivalent

If you ran the Naperville Marathon in 4:25:00, 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.