Age-group thresholds
IRONMAN Chattanooga · 11 editions (2014, 2015, 2016, 2017, 2018, 2019, 2021, 2022, 2023, 2024, 2025) · 18,699 finishers
Editions: 2014 · 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 | 13,184 | 8:24:51 | 9:37:41 | 10:20:26 | 11:13:18 | 12:52:56 | 6:32:11 |
| MPRO | 181 | 6:32:31 | 6:55:04 | 7:12:44 | 7:38:52 | 8:29:51 | 6:32:11 |
| M18-24 | 294 | 8:25:15 | 9:25:46 | 9:46:22 | 10:37:56 | 12:30:49 | 8:20:53 |
| M25-29 | 969 | 8:33:28 | 9:31:51 | 10:06:39 | 10:55:35 | 12:33:45 | 7:43:27 |
| M30-34 | 1,540 | 8:31:22 | 9:30:23 | 10:00:56 | 10:44:49 | 12:32:29 | 7:33:11 |
| M35-39 | 1,867 | 8:36:07 | 9:28:45 | 10:08:31 | 10:54:22 | 12:25:12 | 7:37:50 |
| M40-44 | 2,357 | 9:03:06 | 9:50:26 | 10:28:23 | 11:14:03 | 12:44:17 | 7:15:22 |
| M45-49 | 2,196 | 9:01:05 | 10:01:18 | 10:37:27 | 11:22:12 | 12:56:04 | 8:03:19 |
| M50-54 | 1,985 | 9:16:37 | 10:11:51 | 10:54:38 | 11:42:56 | 13:18:36 | 8:10:53 |
| M55-59 | 1,098 | 9:40:48 | 10:32:22 | 11:11:52 | 11:55:11 | 13:30:17 | 8:01:22 |
| M60-64 | 509 | 10:03:34 | 11:01:56 | 11:32:18 | 12:23:29 | 14:01:06 | 8:22:12 |
| M65-69 | 143 | 10:17:55 | 11:41:31 | 12:13:01 | 12:57:32 | 14:08:41 | 9:49:43 |
| M70-74 | 37 | 11:07:46 | 12:30:06 | 12:54:23 | 13:41:46 | 15:12:45 | 11:07:46 |
| M75-79 | 8 | 12:55:07 | 12:55:07 | 12:55:07 | 13:22:40 | 15:04:26 | 12:55:07 |
Women
| Age group | Finishers | Top 1% | Top 5% | Top 10% | Top 20% | Median | Best |
|---|---|---|---|---|---|---|---|
| All age groups | 5,515 | 9:08:46 | 10:18:57 | 11:01:37 | 11:55:16 | 13:35:41 | 7:17:13 |
| FPRO | 111 | 7:20:45 | 7:35:04 | 7:57:26 | 8:50:49 | 9:33:41 | 7:17:13 |
| F18-24 | 95 | 9:46:36 | 10:24:44 | 11:08:37 | 11:44:29 | 13:08:27 | 9:46:36 |
| F25-29 | 360 | 9:15:19 | 10:15:19 | 10:46:36 | 11:38:46 | 13:17:52 | 8:21:08 |
| F30-34 | 621 | 8:59:34 | 10:07:40 | 10:45:15 | 11:32:13 | 13:13:46 | 8:25:20 |
| F35-39 | 843 | 9:15:21 | 10:15:58 | 10:54:52 | 11:51:22 | 13:26:11 | 8:19:49 |
| F40-44 | 1,114 | 9:45:55 | 10:35:16 | 11:10:56 | 11:51:31 | 13:26:51 | 8:17:13 |
| F45-49 | 958 | 9:39:39 | 10:53:07 | 11:23:35 | 12:12:43 | 13:40:41 | 8:34:30 |
| F50-54 | 802 | 10:00:42 | 11:08:49 | 11:40:30 | 12:21:33 | 13:58:17 | 8:39:44 |
| F55-59 | 408 | 9:56:18 | 11:11:11 | 12:00:48 | 12:50:25 | 14:13:19 | 9:37:22 |
| F60-64 | 167 | 10:03:35 | 10:57:25 | 11:58:28 | 13:24:58 | 14:42:21 | 9:38:16 |
| F65-69 | 30 | 10:27:03 | 11:56:16 | 12:03:51 | 13:16:33 | 14:50:13 | 10:27:03 |
| F70-74 | 6 | 12:56:25 | 12:56:25 | 12:56:25 | 13:12:57 | 14:03:26 | 12:56:25 |
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.