Age-group thresholds
IRONMAN 70.3 Buffalo Springs Lake · 12 editions (2006, 2007, 2008, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018) · 8,670 finishers
Editions: 2006 · 2007 · 2008 · 2010 · 2011 · 2012 · 2013 · 2014 · 2015 · 2016 · 2017 · 2018
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 | 6,395 | 4:10:25 | 4:33:31 | 4:48:09 | 5:08:36 | 5:52:53 | 3:48:58 |
| MPRO | 128 | 3:51:24 | 3:55:27 | 3:58:24 | 4:02:13 | 4:11:08 | 3:48:58 |
| M18-24 | 310 | 4:20:36 | 4:30:06 | 4:42:58 | 5:02:20 | 5:50:48 | 4:01:13 |
| M25-29 | 642 | 4:17:55 | 4:35:59 | 4:45:18 | 5:01:17 | 5:48:48 | 4:08:07 |
| M30-34 | 860 | 4:15:47 | 4:31:35 | 4:42:19 | 4:59:19 | 5:45:34 | 4:05:58 |
| M35-39 | 1,220 | 4:17:57 | 4:32:55 | 4:46:54 | 5:05:26 | 5:48:53 | 4:08:19 |
| M40-44 | 1,115 | 4:24:05 | 4:39:32 | 4:51:22 | 5:07:50 | 5:52:50 | 4:12:52 |
| M45-49 | 854 | 4:31:40 | 4:45:52 | 4:59:49 | 5:16:34 | 5:54:57 | 4:19:49 |
| M50-54 | 568 | 4:34:35 | 4:54:14 | 5:07:10 | 5:24:22 | 6:03:14 | 4:29:45 |
| M55-59 | 341 | 4:49:43 | 5:02:39 | 5:10:20 | 5:25:50 | 6:11:54 | 4:36:51 |
| M60-64 | 175 | 4:51:56 | 5:18:43 | 5:32:24 | 5:45:43 | 6:20:30 | 4:47:35 |
| M65-69 | 79 | 5:02:45 | 5:28:55 | 5:41:12 | 5:51:36 | 6:37:24 | 5:02:45 |
| M70-74 | 34 | 5:38:46 | 6:11:58 | 6:16:50 | 6:23:01 | 7:04:57 | 5:38:46 |
| M75-79 | 16 | 6:59:23 | 6:59:23 | 7:01:55 | 7:24:17 | 7:39:49 | 6:59:23 |
| MHC | 7 | 4:46:57 | 4:46:57 | 4:46:57 | 5:32:35 | 6:34:01 | 4:46:57 |
| MPC | 36 | 4:55:06 | 5:06:28 | 5:22:13 | 5:37:38 | 6:00:26 | 4:55:06 |
| MUNKNOWN | 7 | 4:24:59 | 4:24:59 | 4:24:59 | 4:55:51 | 5:42:58 | 4:24:59 |
Women
| Age group | Finishers | Top 1% | Top 5% | Top 10% | Top 20% | Median | Best |
|---|---|---|---|---|---|---|---|
| All age groups | 2,275 | 4:29:35 | 4:53:47 | 5:06:45 | 5:26:02 | 6:09:30 | 4:16:08 |
| FPRO | 99 | 4:16:08 | 4:20:10 | 4:23:28 | 4:28:23 | 4:41:24 | 4:16:08 |
| F18-24 | 102 | 4:42:29 | 4:59:58 | 5:14:54 | 5:32:28 | 6:01:22 | 4:36:04 |
| F25-29 | 285 | 4:50:42 | 5:01:08 | 5:10:49 | 5:27:09 | 6:06:17 | 4:38:57 |
| F30-34 | 322 | 4:37:55 | 4:55:13 | 5:07:54 | 5:21:49 | 6:04:18 | 4:33:55 |
| F35-39 | 384 | 4:51:21 | 5:00:42 | 5:07:25 | 5:27:53 | 6:07:51 | 4:41:36 |
| F40-44 | 384 | 4:53:59 | 5:04:57 | 5:13:18 | 5:25:39 | 6:05:53 | 4:43:06 |
| F45-49 | 310 | 4:55:45 | 5:11:45 | 5:20:41 | 5:35:34 | 6:21:49 | 4:50:03 |
| F50-54 | 226 | 4:57:29 | 5:19:38 | 5:28:22 | 5:47:12 | 6:25:40 | 4:50:53 |
| F55-59 | 80 | 5:01:43 | 5:39:45 | 5:45:32 | 5:58:33 | 6:28:41 | 5:01:43 |
| F60-64 | 48 | 5:42:12 | 5:46:47 | 5:54:46 | 6:05:49 | 6:39:54 | 5:42:12 |
| F65-69 | 16 | 6:04:56 | 6:04:56 | 6:06:04 | 6:55:06 | 7:15:45 | 6:04:56 |
| F70-74 | 7 | 6:21:28 | 6:21:28 | 6:21:28 | 6:49:14 | 8:15:54 | 6:21:28 |
| FPC | 6 | 5:37:17 | 5:37:17 | 5:37:17 | 6:24:11 | 7:02:24 | 5:37:17 |
| FUNKNOWN | 6 | 5:49:21 | 5:49:21 | 5:49:21 | 5:51:26 | 5:57:07 | 5:49:21 |
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.