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 | 134 | 3:59:14 | 4:19:39 | 4:39:17 | 4:55:07 | 5:30:45 | 3:51:39 |
| MPRO | 6 | 3:51:39 | 3:51:39 | 3:51:39 | 3:59:14 | 4:00:54 | 3:51:39 |
| M18-24 | 5 | 4:54:33 | 4:54:33 | 4:54:33 | 4:54:33 | 6:05:23 | 4:54:33 |
| M25-29 | 8 | 4:35:53 | 4:35:53 | 4:35:53 | 4:41:23 | 5:00:41 | 4:35:53 |
| M30-34 | 21 | 4:10:31 | 4:25:09 | 4:41:16 | 4:58:08 | 5:22:46 | 4:10:31 |
| M35-39 | 25 | 4:29:17 | 4:37:12 | 4:45:21 | 4:58:00 | 5:38:17 | 4:29:17 |
| M40-44 | 32 | 4:22:30 | 4:26:03 | 4:41:54 | 4:56:40 | 5:23:17 | 4:22:30 |
| M45-49 | 23 | 4:39:17 | 4:46:30 | 4:49:24 | 5:04:38 | 5:33:41 | 4:39:17 |
| M50-54 | 10 | 4:55:07 | 4:55:07 | 4:55:07 | 5:37:24 | 6:04:03 | 4:55:07 |
Women
| Age group | Finishers | Top 1% | Top 5% | Top 10% | Top 20% | Median | Best |
|---|---|---|---|---|---|---|---|
| All age groups | 29 | 4:30:17 | 4:34:13 | 4:36:38 | 5:04:19 | 5:33:19 | 4:30:17 |
| FPRO | 5 | 4:30:17 | 4:30:17 | 4:30:17 | 4:30:17 | 4:36:38 | 4:30:17 |
| F30-34 | 6 | 5:19:20 | 5:19:20 | 5:19:20 | 5:26:57 | 5:28:17 | 5:19:20 |
Source: Seffrin A., Nikolaidis P.T., Andrade M.S., Villiger E., Rosemann T., Weiss K., Ferreira D., Knechtle B. (2026). A dataset of 3.6 million IRONMAN triathlon records with transition times (2002-2026), v4.0.0. Zenodo. CC BY 4.0. doi:10.5281/zenodo.23421027.