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 | 273 | 4:48:19 | 5:07:30 | 5:19:26 | 5:36:45 | 6:20:26 | 4:37:03 |
| M25-29 | 9 | 4:41:15 | 4:41:15 | 4:41:15 | 5:01:06 | 5:17:12 | 4:41:15 |
| M30-34 | 23 | 4:57:45 | 5:03:25 | 5:14:23 | 5:26:29 | 5:59:46 | 4:57:45 |
| M35-39 | 40 | 5:07:30 | 5:14:53 | 5:16:31 | 5:31:38 | 6:13:59 | 5:07:30 |
| M40-44 | 59 | 4:37:03 | 4:48:29 | 5:15:45 | 5:30:40 | 5:58:33 | 4:37:03 |
| M45-49 | 81 | 4:50:41 | 5:17:33 | 5:32:17 | 5:51:06 | 6:33:29 | 4:50:41 |
| M50-54 | 33 | 4:55:21 | 5:23:51 | 5:38:10 | 5:48:26 | 6:33:30 | 4:55:21 |
| M55-59 | 14 | 5:36:56 | 5:36:56 | 5:46:54 | 6:11:34 | 6:36:44 | 5:36:56 |
| M60-64 | 6 | 5:44:06 | 5:44:06 | 5:44:06 | 6:15:54 | 6:46:03 | 5:44:06 |
Women
| Age group | Finishers | Top 1% | Top 5% | Top 10% | Top 20% | Median | Best |
|---|---|---|---|---|---|---|---|
| All age groups | 46 | 5:16:53 | 5:34:54 | 5:45:04 | 6:20:03 | 6:46:40 | 5:16:53 |
| F30-34 | 8 | 5:58:46 | 5:58:46 | 5:58:46 | 6:01:46 | 6:40:22 | 5:58:46 |
| F35-39 | 12 | 5:16:53 | 5:16:53 | 5:39:46 | 5:45:04 | 6:27:15 | 5:16:53 |
| F40-44 | 6 | 6:32:03 | 6:32:03 | 6:32:03 | 6:37:42 | 6:41:41 | 6:32:03 |
| F45-49 | 8 | 6:20:03 | 6:20:03 | 6:20:03 | 6:44:54 | 6:48:09 | 6:20:03 |
| F50-54 | 8 | 6:46:40 | 6:46:40 | 6:46:40 | 6:54:17 | 7:17:22 | 6:46:40 |
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.