Predict the 2027 Boston Cut-off Time and win a great prize and bragging rights among all your running friends.
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Boston, MA
Sunday, September 13, 2026
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Don't waste months of training only to run the wrong pace.
Charles River Marathon Invitational 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.: 68°F (20°C)PR Score & Course Score
PR Score: 97.95Race Size
2026: 41 FinishersBQ Percentages
2026: 73.2%Miscellaneous Information
Pace Groups?: Yes
Race Day Temperatures |
High: 69°F (21°C) |
Race Start Conditions |
64°F (18°C) |
PR Score |
95.64 |
Course Score |
99.55 |
The Charles River Marathon Invitational was the 489th largest marathon in the U.S. in 2025 based on the number of finishers.
In 2026, 73.2% of Charles River Marathon Invitational finishers have achieved Boston Marathon qualifying times. In 2025, 70.7% of finishers qualified for the Boston Marathon.
Based on its percentage of Boston Qualifiers (BQs), the Charles River Marathon Invitational ranked 7th among marathons in the U.S. in 2025 and currently ranks 3rd so far in 2026. In Massachusetts, it ranked 1st in 2025 and 1st so far in 2026. These rankings provide a useful benchmark for comparing the Charles River Marathon Invitational with other Boston Marathon qualifying races.
The Charles River Marathon Invitational has a Course Score of 99.55, ranking it as the 98th fastest marathon course in the U.S. and the 3rd fastest marathon course in Massachusetts.
Typical race-time temperature and humidity levels are above the ideal range for optimal marathon performance. Combined with the course profile, this gives the Charles River Marathon Invitational a PR Score of 97.95. The PR Score ranks the Charles River Marathon Invitational as the 291st best marathon in the U.S. for running a Personal Record (PR) and the 11th best marathon for a PR in Massachusetts.
Together, these rankings provide a quick snapshot of how the Charles River Marathon Invitational 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)
Course updated 03/25/2026
View available accomodations around the Charles River Marathon Invitational 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 Charles River Marathon Invitational stacks up against other marathons?
Compare the details of the Charles River Marathon Invitational side-by-side with other marathons with our Comparison Tool.
If you ran the Charles River Marathon Invitational in 5:09:00, what would your time in other marathons be?
See how your finish time would compare on other marathon courses with our Time Conversion Tool.
