Age-group thresholds
IRONMAN California · 4 editions (2022, 2023, 2024, 2025) · 9,468 finishers
Editions: 2022 · 2023 · 2024 · 2025
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 | 7,390 | 8:54:54 | 9:43:41 | 10:20:03 | 11:10:26 | 12:53:10 | 7:56:56 |
| M18-24 | 239 | 8:49:49 | 9:32:31 | 9:49:43 | 10:29:01 | 11:56:25 | 8:35:48 |
| M25-29 | 663 | 8:44:13 | 9:32:22 | 10:01:38 | 10:49:21 | 12:21:22 | 8:15:10 |
| M30-34 | 870 | 8:47:15 | 9:25:17 | 9:55:38 | 10:46:11 | 12:21:12 | 8:16:19 |
| M35-39 | 1,002 | 8:39:48 | 9:17:47 | 9:50:14 | 10:32:50 | 12:17:02 | 8:22:12 |
| M40-44 | 1,134 | 8:48:26 | 9:31:55 | 10:05:14 | 10:56:53 | 12:45:03 | 7:56:56 |
| M45-49 | 1,048 | 9:09:20 | 9:53:24 | 10:23:28 | 11:13:07 | 12:52:01 | 8:29:31 |
| M50-54 | 1,112 | 9:16:20 | 10:10:30 | 10:53:23 | 11:42:31 | 13:19:50 | 8:42:45 |
| M55-59 | 764 | 9:42:05 | 10:30:01 | 11:02:41 | 11:56:39 | 13:37:03 | 9:18:37 |
| M60-64 | 381 | 10:15:37 | 10:55:46 | 11:44:37 | 12:39:55 | 14:29:00 | 9:52:14 |
| M65-69 | 137 | 11:00:39 | 11:20:57 | 11:47:33 | 12:45:14 | 14:36:23 | 10:27:57 |
| M70-74 | 31 | 11:40:28 | 11:43:35 | 13:42:51 | 14:19:25 | 15:14:07 | 11:40:28 |
| M75-79 | 6 | 14:02:42 | 14:02:42 | 14:02:42 | 14:04:32 | 14:44:58 | 14:02:42 |
Women
| Age group | Finishers | Top 1% | Top 5% | Top 10% | Top 20% | Median | Best |
|---|---|---|---|---|---|---|---|
| All age groups | 2,078 | 9:56:08 | 10:49:37 | 11:30:58 | 12:16:59 | 13:56:39 | 9:15:18 |
| F18-24 | 48 | 10:04:26 | 10:39:32 | 10:46:52 | 11:37:37 | 12:42:11 | 10:04:26 |
| F25-29 | 167 | 9:40:04 | 10:09:20 | 10:46:29 | 11:34:57 | 12:59:35 | 9:39:32 |
| F30-34 | 226 | 9:54:21 | 10:34:20 | 10:55:19 | 11:44:30 | 13:19:08 | 9:41:18 |
| F35-39 | 246 | 9:33:50 | 10:35:04 | 11:01:06 | 11:44:32 | 13:24:27 | 9:25:37 |
| F40-44 | 392 | 9:39:15 | 10:30:31 | 11:11:23 | 12:00:15 | 13:28:54 | 9:15:18 |
| F45-49 | 331 | 10:19:04 | 11:17:55 | 11:58:48 | 12:31:06 | 14:19:48 | 9:38:09 |
| F50-54 | 324 | 10:47:52 | 11:37:10 | 12:17:13 | 12:57:16 | 14:42:53 | 10:24:30 |
| F55-59 | 209 | 10:54:43 | 11:47:41 | 12:10:15 | 12:59:41 | 14:40:15 | 10:35:08 |
| F60-64 | 94 | 11:19:21 | 12:34:45 | 12:50:21 | 13:33:11 | 15:02:47 | 11:19:21 |
| F65-69 | 33 | 13:09:44 | 14:17:48 | 14:31:34 | 15:07:07 | 15:47:54 | 13:09:44 |
| F70-74 | 7 | 13:57:46 | 13:57:46 | 13:57:46 | 14:37:14 | 16:16:57 | 13:57:46 |
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.