Is a 3:50:00 Marathon Good Enough for Boston in 2027?
Short answer: it depends on your age group, because the Boston Marathon cutoff is the same buffer for everyone but the standards are not. For men in the open division a 3:50:00 is 55:00 over the standard, so it does not qualify at all. For women in the open division a 3:50:00 is 25:00 over the standard, so it does not qualify at all.
A qualifying time only lets you apply. In most recent years more people apply than the field holds, so a cutoff trims the slowest applicants. The tables below show, for a 3:50:00 marathon, your buffer in each age group, the rough odds at the predicted 2027 cutoff of 5:15, and how often that buffer would have been enough across the last 13 registration cycles.
Men
| Age group | Standard | Your buffer | Est. 2027 odds | History (in/13) |
|---|---|---|---|---|
| 18 to 34 | 2:55:00 | 55:00 over | Does not qualify | 0 of 13 |
| 35 to 39 | 3:00:00 | 50:00 over | Does not qualify | 0 of 13 |
| 40 to 44 | 3:05:00 | 45:00 over | Does not qualify | 0 of 13 |
| 45 to 49 | 3:15:00 | 35:00 over | Does not qualify | 0 of 13 |
| 50 to 54 | 3:20:00 | 30:00 over | Does not qualify | 0 of 13 |
| 55 to 59 | 3:30:00 | 20:00 over | Does not qualify | 0 of 13 |
| 60 to 64 | 3:50:00 | 0:00 under | 0% | 8 of 13 |
| 65 to 69 | 4:05:00 | 15:00 under | 100% | 13 of 13 |
| 70 to 74 | 4:20:00 | 30:00 under | 100% | 13 of 13 |
| 75 to 79 | 4:35:00 | 45:00 under | 100% | 13 of 13 |
| 80 and over | 4:50:00 | 60:00 under | 100% | 13 of 13 |
Women and non-binary
| Age group | Standard | Your buffer | Est. 2027 odds | History (in/13) |
|---|---|---|---|---|
| 18 to 34 | 3:25:00 | 25:00 over | Does not qualify | 0 of 13 |
| 35 to 39 | 3:30:00 | 20:00 over | Does not qualify | 0 of 13 |
| 40 to 44 | 3:35:00 | 15:00 over | Does not qualify | 0 of 13 |
| 45 to 49 | 3:45:00 | 5:00 over | Does not qualify | 0 of 13 |
| 50 to 54 | 3:50:00 | 0:00 under | 0% | 9 of 13 |
| 55 to 59 | 4:00:00 | 10:00 under | 100% | 13 of 13 |
| 60 to 64 | 4:20:00 | 30:00 under | 100% | 13 of 13 |
| 65 to 69 | 4:35:00 | 45:00 under | 100% | 13 of 13 |
| 70 to 74 | 4:50:00 | 60:00 under | 100% | 13 of 13 |
| 75 to 79 | 5:05:00 | 75:00 under | 100% | 13 of 13 |
| 80 and over | 5:20:00 | 90:00 under | 100% | 13 of 13 |
History counts are adjusted for the qualifying standards in force each year, which were 5 minutes slower for runners under 60 before the 2026 race. The odds and the predicted cutoff are estimates, not official figures.
Frequently asked questions
Does a 3:50:00 guarantee a Boston entry?
No. No qualifying time guarantees entry. A 3:50:00 that clears your standard only lets you apply, and a cutoff may still trim the field. Check your age group in the table above.
What buffer do I need for 2027?
This tool uses a predicted cutoff of about 5:15 under your standard, with a wide range. Treat it as an estimate and aim for more if you can.