How to read it: in each row, the time under "Top 10%" is the time of the slowest athlete who still made the fastest 10% of the age group. Beat that time and you are in. Age groups with fewer than 5 finishers are omitted. Finishers only.
Men
| Age group | Finishers | Top 1% | Top 5% | Top 10% | Top 20% | Median | Best |
|---|---|---|---|---|---|---|---|
| All age groups | 71 | 4:35:07 | 5:11:11 | 5:20:43 | 5:32:07 | 6:28:52 | 4:35:07 |
| M18-24 | 7 | 5:11:11 | 5:11:11 | 5:11:11 | 5:13:15 | 5:44:34 | 5:11:11 |
| M30-34 | 11 | 5:17:35 | 5:17:35 | 5:32:04 | 5:45:38 | 6:43:27 | 5:17:35 |
| M35-39 | 13 | 4:59:58 | 4:59:58 | 5:30:42 | 5:30:58 | 6:09:02 | 4:59:58 |
| M40-44 | 11 | 5:04:50 | 5:04:50 | 5:24:34 | 6:07:22 | 6:25:54 | 5:04:50 |
| M45-49 | 7 | 5:25:06 | 5:25:06 | 5:25:06 | 5:56:19 | 6:23:38 | 5:25:06 |
| M50-54 | 8 | 5:20:43 | 5:20:43 | 5:20:43 | 5:30:18 | 6:22:53 | 5:20:43 |
| M55-59 | 6 | 5:50:40 | 5:50:40 | 5:50:40 | 5:53:42 | 6:20:37 | 5:50:40 |
Women
| Age group | Finishers | Top 1% | Top 5% | Top 10% | Top 20% | Median | Best |
|---|---|---|---|---|---|---|---|
| All age groups | 27 | 5:00:56 | 5:43:04 | 5:48:56 | 6:18:15 | 6:54:20 | 5:00:56 |
| F40-44 | 8 | 5:00:56 | 5:00:56 | 5:00:56 | 5:48:56 | 6:29:46 | 5:00:56 |
Source: Seffrin A., Nikolaidis P.T., Andrade M.S., Villiger E., Rosemann T., Weiss K., Ferreira D., Knechtle B. (2026). A dataset of 2.7 million IRONMAN triathlon records with transition times (2002-2026), v3.0.0. Zenodo. CC BY 4.0. doi:10.5281/zenodo.22097794.