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Race Dates

2018: Sunday, May 6, 2018
2017: Sunday, May 7, 2017

Course Information

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

Race Day Weather

Mean Temp.: 61°F (16°C)
Average High: 71°F (21°C)
Average Low: 51° F (10°C)

Historical Weather

PR Score & Course Score

PR Score: 98.55
Course Score: 99.25

Race Size

2017: 66 Finishers
2016: 104 Finishers
2015: 64 Finishers

BQ Percentages

2018: N/A
2017: 7.6%
2016: 23.1%

Miscellaneous Information

Pace Groups?: No

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Course Description

The Potomac River Run Marathon course is a narrow (12-foot) wide unpaved trail, entirely flat, past 150-year-old locks and gatehouses. The course is very flat with the highest point at 110 feet and the lowest at 29 feet.

Marathon Rankings

The Potomac River Run Marathon was the 428th largest marathon in the U.S. last year and was the 388th largest in 2016.

Last year 7.6% of finishers qualified for the Boston Marathon and 23.1% of runners qualified for Boston in 2016.

This gives the Potomac River Run Marathon the 272nd highest percentage of Boston Marathon qualifiers in the U.S. last year and the 28th highest percentage in 2016.

Its Course Score of 99.25 ranks it as the 146th fastest marathon course in the U.S. and the 3rd fastest course in Maryland.

The typical race time temperature and humidity levels are slightly above the ideal range for optimal marathon performance. This, coupled with the Course Score, gives the Potomac River Run Marathon a PR Score of 98.55. This PR Score ranks it as the 204th fastest marathon in the U.S. and the 5th fastest in Maryland.

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

Elevation Chart

Max Elevation: 110 feet (33m)
Min Elevation: 29 feet (8m)


Recent Potomac River Run Marathon Reviews

5 Stars from 1 Reviews
View all Reviews

review of 2016 Potomac River Run Marathon.   

5 / 5 Stars


Very small, flat and fast. Felt like a training run. No lost time getting drinks or having to deal with crowds and really easy to jump off the path and go to the bathroom. I pr'd at 48 years old!

Race Tips

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

Finish Time Equivalent

If you ran the Potomac River Run Marathon in 3:21:00, 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.