Most sustained slowdowns began at 30K or later.
About 3 in 10 finishes had one.
72 percent
of the 1,266,780 sustained slowdowns
Runners with slower earlier bests had more sustained slowdowns: 12% to 38%.
All numbers1 table
Sustained slowdown by earlier recorded best
| Earlier best | Sustained slowdown | Finishes |
|---|---|---|
| Under 3:00 | 12% | 38,022 |
| 3:00–3:30 | 19% | 103,351 |
| 3:30–4:00 | 25% | 162,031 |
| 4:00+ | 38% | 345,510 |