Predict the 2027 Boston Cut-off Time and win a great prize and bragging rights among all your running friends.
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Cape Girardeau, MO
Saturday, May 3, 2025
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No course description available at this time.
Don't waste months of training only to run the wrong pace.
Muddy River Marathon Pace Bands are adjusted for the specific terrain of the course, your goal time and pacing strategies.
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Race Dates
2026: TBDCourse Information
Profile: Rolling HillsRace Day Weather
Mean Temp.: 62°F (16°C)PR Score & Course Score
PR Score: 96.46Race Size
2026: No ResultsBQ Percentages
2026: N/AMiscellaneous Information
Pace Groups?: No
Race Day Temperatures |
High: 73°F (23°C) |
Race Start Conditions |
63°F (17°C) |
PR Score |
95.12 |
Course Score |
98.01 |
The Muddy River Marathon was the largest marathon in the U.S. in 2025 based on the number of finishers. In 2024, it ranked as the largest marathon in the U.S..
In 2025, 2.9% of Muddy River Marathon finishers achieved Boston Marathon qualifying times. In 2024, 6.7% of finishers qualified for Boston.
Based on its percentage of Boston Qualifiers (BQs), the Muddy River Marathon ranked among marathons in the U.S. in 2025 and in 2024. These rankings provide a useful benchmark for runners comparing Boston Marathon qualifying potential across different races.
The Muddy River Marathon has a Course Score of 98.01, ranking it as the fastest marathon course in the U.S. and the fastest marathon course in Missouri.
Typical race-time temperature and humidity levels are above the ideal range for optimal marathon performance. Combined with the course profile, this gives the Muddy River Marathon a PR Score of 96.46. The PR Score ranks the Muddy River Marathon as the best marathon in the U.S. for running a Personal Record (PR) and the best marathon for a PR in Missouri.
Together, these rankings provide a quick snapshot of how the Muddy River Marathon compares with other marathons in the U.S. and Missouri for speed, PR potential, Boston Marathon qualifying success, and overall participation.
Max Elevation: 467 feet (142m)
Min Elevation: 338 feet (103m)
Elevation Gain: 832 feet (253m)
Elevation Loss: 837 feet (255m)
Course updated 12/18/2023
View available accomodations around the Muddy River Marathon Finish Line and Course. Book your Reservation now before the best places are sold out.
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Use tools below to compare races and convert times across courses.
Do you want to see how the Muddy River Marathon stacks up against other marathons?
Compare the details of the Muddy River Marathon side-by-side with other marathons with our Comparison Tool.
If you ran the Muddy River Marathon in 4:12:00, what would your time in other marathons be?
See how your finish time would compare on other marathon courses with our Time Conversion Tool.
