The 2025 Boston Marathon was the fastest in the 129-year history of the race, based on how the elite men and women raced. But how did the rest of the field run?
Here are some interesting snippets of 2025 Boston Marathon Strava data that provide a glimpse into the success of age-group runners, based on those who were tracking their races on that digital platform.
Median finish times
- Women: 3:39:07
- Men: 3:13:50
- Boomer: 3:59:54
- Gen X: 3:34:18
- Millennial: 3:14:52
- Gen Z: 3:17:03
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Bonk rates
(Slowdown of 10% or more in the final 10k of the race)
- Women: 25%
- Men: 39%
- Men were 56% more likely to bonk
- Boomer: 30%
- Gen X: 26%
- Millennial: 24%
- Gen Z: 25%
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Negative Splits
(Ran the second half faster than the first half)
- Women: 9%
- Men: 7%
- Boomer: 3%
- Gen X: 5%
- Millennial: 9%
- Gen Z: 13%
Heartbreak Hill slowdowns for faster vs slower runners
(Uses pace over first 8 miles of course to estimate target finish band – Official Strava segment)
- Runners targeting a finish of < 2:30 slowed down 18% at Heartbreak Hill, averaging a 6:31 pace for the segment (compared to a 5:34 pace for the first 8 miles of the race)
- Runners targeting a finish of 2:30 – 2:59 slowed down 17% at Heartbreak Hill, averaging a 7:32 pace for the segment (compared to a 6:27 pace for the first 8 miles of the race)
- Runners targeting a finish of 3:00 – 3:29 slowed down 19% at Heartbreak Hill, averaging a 8:52 pace for the segment (compared to a 7:25 pace for the first 8 miles of the race)
- Runners targeting a finish of 3:30 – 3:59 slowed down 22% at Heartbreak Hill, averaging a 10:22 pace for the segment (compared to a 8:29 pace for the first 8 miles of the race)
- Runners targeting a finish of 4:00 – 4:29 slowed down 28% at Heartbreak Hill, averaging a 12:22 pace for the segment (compared to a 9:38 pace for the first 8 miles of the race)
- Runners targeting a finish of 4:30 – 4:59 slowed down 33% at Heartbreak Hill, averaging a 14:20 pace for the segment (compared to a 10:46 pace for the first 8 miles of the race)
