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Race Dates

2018: TBD
2017: Sunday, October 1, 2017

Course Information

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

Race Day Weather

Mean Temp.: 62°F (16°C)
Average High: 72°F (22°C)
Average Low: 52° F (11°C)

Historical Weather

PR Score & Course Score

PR Score: 98.00
Course Score: 98.89

Race Size

2017: No Results
2016: 544 Finishers
2015: 635 Finishers

BQ Percentages

2017: N/A
2016: 6.8%
2015: 7.1%

Miscellaneous Information

Pace Groups?: No

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Course Description

The MO Cowbell Marathon course is about half on paved roads (~14.5 miles) and the rest on dirt.

The MO Cowbell Marathon starts at the banks of Missouri River in St. Charles, Missouri, and takes runners on a winding course through the area's historic neighborhoods.

The race returns to the start/finish at approximately the halfway point where runners head out for an out-and-back section on the Katy Trail as well as crossing the Missouri River.

Marathon Rankings

The MO Cowbell Marathon was the 134th largest marathon in the U.S. last year and was the 125th largest in 2015.

Last year 6.8% of finishers qualified for the Boston Marathon and 7.1% of runners qualified for Boston in 2015.

This gives the MO Cowbell Marathon the 325th highest percentage of Boston Marathon qualifiers in the U.S. last year and the 297th highest percentage in 2015.

Its Course Score of 98.89 ranks it as the 217th fastest marathon course in the U.S. and the 1st fastest course in Missouri.

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 MO Cowbell Marathon a PR Score of 98.00. This PR Score ranks it as the 262nd fastest marathon in the U.S. and the 3rd fastest in Missouri.

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

Elevation Chart

Max Elevation: 549 feet (167m)
Min Elevation: 436 feet (132m)


Recent MO Cowbell Marathon Reviews

5 Stars from 2 Reviews
View all Reviews

review of 2016 MO Cowbell Marathon.   

5 / 5 Stars


Only two things I didn't like at this race; minimal water stops, and lines to porta-pots were to long. They had adequate porta-pots, unfortunate only two lines which were so long made it stressful before the race. Easily could have had each line have two porta-pots instead of two lines sharing 20 porta-pots.

Lovely race, running through some older areas of town and some of the newer town-homes was quite quaint. Easy on street parking near start - no biggie at all.

Race Tips

Pack your own water.

Nice hill on back half near river - make sure you save some in the tank or you will feel defeated when you reach it.

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

Nice dinner choice at Erios Ristorante- very tasty! Country Inn & Suites (St. Peters) was very very late w/ check-ins, but very accommodating, and inexpensive!

review of 2015 MO Cowbell Marathon.   

5 / 5 Stars


Well organized.
Not too crowded.

Race Tips

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

Finish Time Equivalent

If you ran the MO Cowbell Marathon in 4:28:00, 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.