Boston Marathon
Boston, United States of America · Tuesday 20 April 2027
The Boston Marathon is an annual marathon race held in Massachusetts, covering a distance of 26 miles and 385 yards. The course begins in the rural town of Hopkinton and finishes in Copley Square in Boston, following a point-to-point route that passes through multiple communities, including Ashland, Framingham, Natick, Wellesley, Newton, Brookline, and Boston proper.
Difficulty Calculator
h
:m
:s
Adjusted Time
3:54:52
Time difference: -5.1 minutes compared to a flat, road, temperate course.
Course Details
Elevation Gain157m
Elevation High137m
Elevation Low4m
Weather Forecast
High9°C
Low0°C
Chance of Rain6%
How hard is Boston Marathon?
Moderateharder than 16% of marathons
Flattest / easiestHardest
On our difficulty model, Boston Marathon plays about even with an average road marathon for a 3:30 runner. It ranks #970 hardest of 1150 marathons we analyse, and #467 of 575 in United States of America. Use the calculator above to see the exact adjusted time for your own goal pace.
What will you run at Boston Marathon?
Estimated finish times on this course versus the same effort on an average road marathon, based on its elevation, surface, and expected race-day temperature.
| Average-course time | On Boston Marathon | Difference |
|---|---|---|
| 3:00:00 | 2:55:22 | −04:38 |
| 3:30:00 | 3:25:07 | −04:53 |
| 4:00:00 | 3:54:52 | −05:08 |
| 4:30:00 | 4:24:40 | −05:20 |
| 5:00:00 | 4:54:28 | −05:32 |
| 5:30:00 | 5:24:17 | −05:43 |
| 6:00:00 | 5:54:07 | −05:53 |
Use the calculator above for your exact goal time. Want a prediction from your own training? Try the marathon time predictor.
Boston Marathon 2027 Course Analysis
Boston Marathon is a full marathon held in Boston, United States of America. It is scheduled for Tuesday 20 April 2027. The course is run on road surface with 157m of total climbing, with its high point near 137m above sea level. For registration and full race details, visit the official Boston Marathon website.
Elevation Profile
With 157m of total climbing, this is a gently undulating course. The elevation changes are manageable for most runners and shouldn't greatly affect your pacing.
Expected Race Day Weather
Based on historical weather data for April, the expected race day conditions are as follows. Cold conditions are expected, with temperatures between 0°C and 9°C. While cold weather reduces overheating risk, runners should dress in layers and be prepared for potential wind chill. There is a low chance of rain (6%), so dry conditions are likely.
Surface Type: Road
Boston Marathon is run on road surfaces, which provide the fastest and most predictable conditions for racing. Road courses allow for consistent pacing and are typically the best choice for a personal best.
Looking for an easier marathon or a tougher challenge? You can also compare Boston Marathon against other marathons to find the right race for your goals.
Marathons of similar difficulty
If Boston Marathon fits your goal, these courses play out about the same on our difficulty model.
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