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 | 942 | 4:59:18 | 5:12:31 | 5:25:39 | 5:45:40 | 6:24:08 | 4:42:30 |
| M18-24 | 32 | 4:42:30 | 5:08:04 | 5:13:10 | 5:23:15 | 6:10:59 | 4:42:30 |
| M25-29 | 89 | 4:48:48 | 5:07:47 | 5:18:17 | 5:44:43 | 6:18:35 | 4:48:48 |
| M30-34 | 184 | 5:00:04 | 5:09:33 | 5:15:19 | 5:39:22 | 6:18:12 | 4:55:02 |
| M35-39 | 177 | 4:55:48 | 5:04:07 | 5:17:08 | 5:35:17 | 6:15:39 | 4:45:07 |
| M40-44 | 195 | 4:56:58 | 5:13:37 | 5:31:57 | 5:45:57 | 6:20:28 | 4:48:00 |
| M45-49 | 145 | 5:12:08 | 5:29:55 | 5:40:13 | 5:51:35 | 6:33:45 | 5:10:21 |
| M50-54 | 79 | 5:10:58 | 5:27:22 | 5:51:11 | 6:04:02 | 6:57:37 | 5:10:58 |
| M55-59 | 25 | 5:24:23 | 5:42:47 | 5:49:14 | 5:56:32 | 6:38:26 | 5:24:23 |
| M60-64 | 13 | 5:49:30 | 5:49:30 | 6:16:19 | 6:17:01 | 6:57:43 | 5:49:30 |
Women
| Age group | Finishers | Top 1% | Top 5% | Top 10% | Top 20% | Median | Best |
|---|---|---|---|---|---|---|---|
| All age groups | 198 | 5:18:11 | 5:45:09 | 5:56:38 | 6:15:48 | 7:04:22 | 5:16:13 |
| F18-24 | 6 | 6:18:03 | 6:18:03 | 6:18:03 | 6:20:38 | 7:08:36 | 6:18:03 |
| F25-29 | 26 | 5:16:13 | 5:34:44 | 5:48:07 | 6:09:26 | 6:37:17 | 5:16:13 |
| F30-34 | 37 | 5:18:11 | 5:29:03 | 5:38:52 | 6:21:29 | 6:57:32 | 5:18:11 |
| F35-39 | 44 | 5:39:41 | 5:45:09 | 5:49:52 | 6:24:02 | 7:05:07 | 5:39:41 |
| F40-44 | 31 | 5:38:33 | 5:55:10 | 6:06:30 | 6:13:31 | 7:07:24 | 5:38:33 |
| F45-49 | 27 | 5:55:49 | 5:55:51 | 6:08:13 | 6:18:07 | 7:04:45 | 5:55:49 |
| F50-54 | 18 | 6:01:18 | 6:01:18 | 6:02:38 | 6:15:48 | 7:33:23 | 6:01:18 |
| F55-59 | 7 | 6:10:34 | 6:10:34 | 6:10:34 | 6:14:06 | 6:58:27 | 6:10:34 |
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.