Age-group thresholds
IRONMAN 70.3 Chattanooga · 10 editions (2015, 2016, 2017, 2018, 2019, 2021, 2022, 2023, 2024, 2025) · 24,470 finishers
Editions: 2015 · 2016 · 2017 · 2018 · 2019 · 2021 · 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 | 16,275 | 3:53:40 | 4:24:02 | 4:41:24 | 5:02:34 | 5:52:04 | 3:08:08 |
| MPRO | 250 | 3:12:48 | 3:21:30 | 3:31:10 | 3:45:15 | 4:01:52 | 3:08:08 |
| M18-24 | 596 | 3:48:52 | 4:13:41 | 4:31:28 | 4:51:19 | 5:43:46 | 3:41:19 |
| M25-29 | 1,470 | 3:54:08 | 4:20:48 | 4:35:31 | 4:54:16 | 5:49:36 | 3:35:35 |
| M30-34 | 2,152 | 3:58:25 | 4:24:22 | 4:36:10 | 4:56:09 | 5:47:28 | 3:22:00 |
| M35-39 | 2,441 | 4:02:07 | 4:26:50 | 4:39:28 | 4:57:26 | 5:43:52 | 3:39:31 |
| M40-44 | 2,544 | 4:05:51 | 4:30:00 | 4:44:37 | 5:02:30 | 5:46:52 | 3:35:04 |
| M45-49 | 2,360 | 4:09:13 | 4:34:08 | 4:48:37 | 5:07:43 | 5:53:21 | 3:36:00 |
| M50-54 | 2,001 | 4:11:43 | 4:38:44 | 4:54:42 | 5:12:55 | 6:00:40 | 3:39:40 |
| M55-59 | 1,345 | 4:19:05 | 4:46:40 | 4:59:54 | 5:18:51 | 6:06:05 | 3:44:37 |
| M60-64 | 739 | 4:21:02 | 4:53:08 | 5:08:57 | 5:30:26 | 6:21:13 | 3:47:37 |
| M65-69 | 264 | 4:28:47 | 5:07:27 | 5:22:56 | 5:43:36 | 6:31:48 | 4:23:36 |
| M70-74 | 80 | 4:43:34 | 4:49:51 | 5:36:13 | 5:50:16 | 6:38:58 | 4:43:34 |
| M75-79 | 29 | 5:50:28 | 6:03:49 | 6:15:59 | 6:31:34 | 7:18:22 | 5:50:28 |
Women
| Age group | Finishers | Top 1% | Top 5% | Top 10% | Top 20% | Median | Best |
|---|---|---|---|---|---|---|---|
| All age groups | 8,195 | 4:17:25 | 4:46:00 | 5:04:38 | 5:28:21 | 6:18:19 | 3:46:46 |
| FPRO | 200 | 3:49:48 | 3:55:56 | 4:06:27 | 4:15:37 | 4:31:33 | 3:46:46 |
| F18-24 | 222 | 4:27:07 | 4:56:32 | 5:11:54 | 5:30:42 | 6:16:04 | 4:05:52 |
| F25-29 | 673 | 4:29:21 | 4:45:31 | 4:57:29 | 5:18:22 | 6:05:13 | 4:07:24 |
| F30-34 | 943 | 4:31:43 | 4:52:02 | 5:06:05 | 5:23:16 | 6:11:14 | 3:53:14 |
| F35-39 | 1,248 | 4:21:29 | 4:44:29 | 5:01:52 | 5:23:56 | 6:10:44 | 3:53:19 |
| F40-44 | 1,463 | 4:27:00 | 4:51:30 | 5:07:38 | 5:29:54 | 6:13:54 | 4:00:52 |
| F45-49 | 1,301 | 4:30:21 | 5:01:33 | 5:17:38 | 5:37:16 | 6:22:08 | 4:02:18 |
| F50-54 | 1,039 | 4:43:57 | 5:03:30 | 5:20:05 | 5:43:11 | 6:29:27 | 4:06:59 |
| F55-59 | 675 | 4:46:08 | 5:12:19 | 5:25:19 | 5:47:08 | 6:33:57 | 4:04:14 |
| F60-64 | 309 | 4:49:40 | 5:10:47 | 5:36:02 | 5:57:47 | 6:49:54 | 4:36:16 |
| F65-69 | 91 | 5:04:17 | 5:34:47 | 5:51:29 | 6:08:06 | 6:54:58 | 5:04:17 |
| F70-74 | 28 | 5:34:41 | 6:02:16 | 6:19:07 | 6:39:35 | 7:18:41 | 5:34:41 |
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.