Predict the 2027 Boston Cut-off Time and win a great prize and bragging rights among all your running friends.
Submit Your PredictionBoston, MA
Sunday, May 3, 2026




4.5 Stars from 4 ReviewsDon't waste months of training only to run the wrong pace.
Charles River 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: Very FlatRace Day Weather
Mean Temp.: 55°F (12°C)PR Score & Course Score
PR Score: 99.55Race Size
2026: 101 FinishersBQ Percentages
2026: 27.7%Miscellaneous Information
Pace Groups?: Yes
Race Day Temperatures |
High: 70°F (21°C) |
Race Start Conditions |
61°F (16°C) |
PR Score |
96.91 |
Course Score |
99.55 |
The Charles River Marathon was the 397th largest marathon in the U.S. in 2025 based on the number of finishers. In 2024, it ranked as the 239th largest marathon in the U.S..
In 2026, 27.7% of Charles River Marathon finishers have achieved Boston Marathon qualifying times. In 2025, 21.3% of finishers qualified for the Boston Marathon.
Based on its percentage of Boston Qualifiers (BQs), the Charles River Marathon ranked 36th among marathons in the U.S. in 2025 and currently ranks 17th so far in 2026. In Massachusetts, it ranked 5th in 2025 and 4th so far in 2026. These rankings provide a useful benchmark for comparing the Charles River Marathon with other Boston Marathon qualifying races.
The Charles River Marathon has a Course Score of 99.55, ranking it as the 96th fastest marathon course in the U.S. and the 2nd fastest marathon course in Massachusetts.
Typical race-time temperature and humidity levels are within the ideal range for optimal marathon performance. Combined with the course profile, this gives the Charles River Marathon a PR Score of 99.55. The PR Score ranks the Charles River Marathon as the 66th best marathon in the U.S. for running a Personal Record (PR) and the 1st best marathon for a PR in Massachusetts.
Together, these rankings provide a quick snapshot of how the Charles River Marathon compares with other marathons in the U.S. and Massachusetts for speed, PR potential, Boston Marathon qualifying success, and overall participation.
Max Elevation: 16 feet (4m)
Min Elevation: 2 feet (0m)
Elevation Gain: 214 feet (65m)
Elevation Loss: 214 feet (65m)
View available accomodations around the Charles River Marathon Finish Line and Course. Book your Reservation now before the best places are sold out.
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Compare the details of the Charles River Marathon side-by-side with other marathons with our Comparison Tool.
If you ran the Charles River Marathon in 5:43:00, what would your time in other marathons be?
See how your finish time would compare on other marathon courses with our Time Conversion Tool.




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