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Race Dates

2018: TBD
2017: Sunday, March 12, 2017

Course Information

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

Race Day Weather

Mean Temp.: 46°F (7°C)
Average High: 55°F (12°C)
Average Low: 36° F (2°C)

Historical Weather

PR Score & Course Score

PR Score: 99.26
Course Score: 99.26

Race Size

2017: 73 Finishers
2016: 78 Finishers
2015: 146 Finishers

BQ Percentages

2017: 17.8%
2016: 25.6%
2015: 19.9%

Miscellaneous Information

Pace Groups?: No

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Course Description

The first 16 miles of the Lower Potomac River Marathon course are completely flat mostly along the water. There is a 6 miles stretch from miles 16 to approximately 23 that travels inland and has some small gently rolling hills. The course then returns to the coast for a flat finish.

Typical race day weather is cool and this, coupled with the fast course can lead to PRs and Boston Marathon qualifying times.

Marathon Rankings

The Lower Potomac River Marathon was the 458th largest marathon in the U.S. last year and was the 331st largest in 2015.

This year 17.8% of finishers qualified for the Boston Marathon and 25.6% of runners qualified for Boston in 2016.

This gives the Lower Potomac River Marathon the 21st highest percentage of Boston Marathon qualifiers in the U.S. last year and the 56th highest percentage so far in 2017.

Its Course Score of 99.26 ranks it as the 138th fastest marathon course in the U.S. and the 1st fastest course in Maryland.

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 Lower Potomac River Marathon a PR Score of 99.26. This PR Score ranks it as the 97th fastest marathon in the U.S. and the 1st fastest in Maryland.

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

Elevation Chart

Max Elevation: 111 feet (33m)
Min Elevation: 3 feet (0m)


Ratings & Reviews: None

Finish Time Equivalent

If you ran the Lower Potomac River Marathon in 4:19:00, 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.