Predict the 2027 Boston Cut-off Time and win a great prize and bragging rights among all your running friends.
Submit Your Prediction
Washington, DC
Saturday, May 2, 2026
5 Stars from 1 Reviews
Don't waste months of training only to run the wrong pace.
Potomac River Run Marathon Pace Bands are adjusted for the specific terrain of the course, your goal time and pacing strategies.
Only $9.99
Race Dates
2027: TBDCourse Information
Profile: Mostly FlatRace Day Weather
Mean Temp.: 61°F (16°C)PR Score & Course Score
PR Score: 98.84Race Size
2026: 179 FinishersBQ Percentages
2026: 15.6%Miscellaneous Information
Pace Groups?: No
Race Day Temperatures |
High: 70°F (21°C) |
Race Start Conditions |
55°F (13°C) |
PR Score |
98.42 |
Course Score |
99.36 |
The Potomac River Run Marathon was the 281st largest marathon in the U.S. in 2025 based on the number of finishers. In 2024, it ranked as the 286th largest marathon in the U.S..
In 2026, 15.6% of Potomac River Run Marathon finishers have achieved Boston Marathon qualifying times. In 2025, 4.7% of finishers qualified for the Boston Marathon.
Based on its percentage of Boston Qualifiers (BQs), the Potomac River Run Marathon ranked 298th among marathons in the U.S. in 2025 and currently ranks 55th so far in 2026. In Washington D.C., it ranked 4th in 2025 and 1st so far in 2026. These rankings provide a useful benchmark for comparing the Potomac River Run Marathon with other Boston Marathon qualifying races.
The Potomac River Run Marathon has a Course Score of 99.53, ranking it as the 102nd fastest marathon course in the U.S. and the 3rd fastest marathon course in Washington D.C..
Typical race-time temperature and humidity levels are slightly above the ideal range for optimal marathon performance. Combined with the course profile, this gives the Potomac River Run Marathon a PR Score of 98.84. The PR Score ranks the Potomac River Run Marathon as the 188th best marathon in the U.S. for running a Personal Record (PR) and the 3rd best marathon for a PR in Washington D.C..
Together, these rankings provide a quick snapshot of how the Potomac River Run Marathon compares with other marathons in the U.S. and Washington D.C. for speed, PR potential, Boston Marathon qualifying success, and overall participation.
Max Elevation: 116 feet (35m)
Min Elevation: 35 feet (10m)
Elevation Gain: 219 feet (66m)
Elevation Loss: 219 feet (66m)
Course updated 05/12/2026
View available accomodations around the Potomac River Run Marathon Finish Line and Course. Book your Reservation now before the best places are sold out.
For a better mobile or desktop experience:
Use tools below to compare races and convert times across courses.
Do you want to see how the Potomac River Run Marathon stacks up against other marathons?
Compare the details of the Potomac River Run Marathon side-by-side with other marathons with our Comparison Tool.
If you ran the Potomac River Run Marathon in 3:02:00, what would your time in other marathons be?
See how your finish time would compare on other marathon courses with our Time Conversion Tool.
Full Review:
