Age-group thresholds
IRONMAN 70.3 Bolton · 4 editions (2021, 2024, 2025, 2026) · 5,004 finishers
Editions: 2021 · 2024 · 2025 · 2026
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 | 4,052 | 4:20:34 | 4:45:38 | 5:00:14 | 5:21:03 | 5:59:23 | 3:59:22 |
| M18-24 | 384 | 4:11:14 | 4:50:01 | 5:02:42 | 5:19:07 | 5:56:06 | 4:01:21 |
| M25-29 | 573 | 4:17:41 | 4:41:26 | 4:58:24 | 5:18:41 | 5:53:13 | 4:02:54 |
| M30-34 | 740 | 4:17:26 | 4:36:23 | 4:52:20 | 5:14:11 | 5:55:24 | 3:59:22 |
| M35-39 | 653 | 4:19:44 | 4:39:25 | 4:55:05 | 5:21:10 | 5:58:04 | 4:11:25 |
| M40-44 | 538 | 4:22:16 | 4:48:53 | 5:01:18 | 5:21:09 | 5:59:53 | 4:17:41 |
| M45-49 | 418 | 4:27:08 | 4:43:46 | 5:01:54 | 5:22:16 | 6:00:03 | 4:07:37 |
| M50-54 | 380 | 4:34:57 | 4:52:17 | 5:03:22 | 5:23:34 | 6:10:52 | 4:25:41 |
| M55-59 | 226 | 4:52:29 | 5:00:26 | 5:17:33 | 5:31:45 | 6:13:49 | 4:41:45 |
| M60-64 | 93 | 4:52:54 | 5:06:18 | 5:24:49 | 5:36:24 | 6:18:46 | 4:52:54 |
| M65-69 | 33 | 5:32:34 | 5:32:56 | 5:37:16 | 5:47:35 | 6:49:37 | 5:32:34 |
| M70-74 | 9 | 5:58:27 | 5:58:27 | 5:58:27 | 6:55:48 | 7:09:40 | 5:58:27 |
Women
| Age group | Finishers | Top 1% | Top 5% | Top 10% | Top 20% | Median | Best |
|---|---|---|---|---|---|---|---|
| All age groups | 952 | 4:48:51 | 5:08:45 | 5:25:48 | 5:45:09 | 6:31:09 | 4:31:39 |
| F18-24 | 119 | 4:51:17 | 5:04:31 | 5:24:53 | 5:48:34 | 6:32:28 | 4:50:57 |
| F25-29 | 182 | 4:40:48 | 5:01:46 | 5:21:08 | 5:42:19 | 6:26:18 | 4:31:39 |
| F30-34 | 174 | 4:42:03 | 4:59:35 | 5:14:15 | 5:33:57 | 6:17:33 | 4:36:03 |
| F35-39 | 95 | 4:48:51 | 5:12:21 | 5:22:18 | 5:40:07 | 6:28:20 | 4:48:51 |
| F40-44 | 127 | 4:53:38 | 5:14:13 | 5:32:25 | 5:48:12 | 6:35:25 | 4:46:48 |
| F45-49 | 107 | 5:00:08 | 5:15:23 | 5:29:01 | 5:52:35 | 6:36:10 | 4:52:06 |
| F50-54 | 76 | 5:13:01 | 5:31:51 | 5:39:30 | 5:52:44 | 6:39:31 | 5:13:01 |
| F55-59 | 53 | 5:13:40 | 5:18:40 | 5:29:51 | 5:45:43 | 6:27:05 | 5:13:40 |
| F60-64 | 14 | 6:22:40 | 6:22:40 | 6:26:15 | 6:38:52 | 7:00:23 | 6:22:40 |
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.