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 | 258 | 4:24:41 | 4:38:05 | 4:49:45 | 5:18:29 | 6:16:57 | 4:22:25 |
| M18-24 | 10 | 4:29:29 | 4:29:29 | 4:29:29 | 4:34:52 | 5:13:43 | 4:29:29 |
| M25-29 | 22 | 4:22:25 | 4:29:40 | 4:32:53 | 4:42:55 | 5:48:12 | 4:22:25 |
| M30-34 | 39 | 4:28:40 | 4:29:25 | 4:34:48 | 4:50:35 | 5:39:02 | 4:28:40 |
| M35-39 | 40 | 4:23:13 | 4:38:05 | 4:43:58 | 5:06:30 | 5:54:07 | 4:23:13 |
| M40-44 | 52 | 4:45:05 | 5:00:01 | 5:42:12 | 6:05:37 | 6:37:29 | 4:45:05 |
| M45-49 | 42 | 4:24:41 | 5:10:53 | 5:19:18 | 5:42:00 | 6:16:50 | 4:24:41 |
| M50-54 | 28 | 4:45:47 | 4:48:35 | 5:20:34 | 5:35:20 | 6:30:44 | 4:45:47 |
| M55-59 | 12 | 5:24:09 | 5:24:09 | 5:38:19 | 5:38:40 | 6:27:47 | 5:24:09 |
| M60-64 | 8 | 5:23:18 | 5:23:18 | 5:23:18 | 5:46:27 | 6:38:01 | 5:23:18 |
Women
| Age group | Finishers | Top 1% | Top 5% | Top 10% | Top 20% | Median | Best |
|---|---|---|---|---|---|---|---|
| All age groups | 37 | 5:02:56 | 5:29:23 | 5:38:47 | 6:00:33 | 6:37:09 | 5:02:56 |
| F25-29 | 8 | 5:36:26 | 5:36:26 | 5:36:26 | 5:41:00 | 6:21:11 | 5:36:26 |
| F30-34 | 6 | 5:02:56 | 5:02:56 | 5:02:56 | 5:52:43 | 6:11:59 | 5:02:56 |
| F35-39 | 9 | 5:29:23 | 5:29:23 | 5:29:23 | 5:38:47 | 6:35:29 | 5:29:23 |
| F45-49 | 5 | 6:29:12 | 6:29:12 | 6:29:12 | 6:29:12 | 6:50:10 | 6:29:12 |
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.