Age-group thresholds

IRONMAN 70.3 Chattanooga 2016 · 2,124 finishers

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 1,359 4:10:15 4:38:59 4:50:41 5:10:11 5:55:34 3:46:48
MPRO 25 3:46:48 3:48:46 3:53:05 3:57:51 4:08:11 3:46:48
M18-24 23 4:26:02 4:37:34 4:49:36 4:59:43 5:37:45 4:26:02
M25-29 87 4:16:44 4:33:24 4:49:21 5:10:51 5:54:03 4:16:44
M30-34 176 4:22:05 4:33:02 4:44:32 4:56:57 5:44:00 4:18:51
M35-39 233 4:25:05 4:39:56 4:49:36 5:01:19 5:39:04 4:20:37
M40-44 267 4:25:52 4:44:41 4:55:41 5:12:46 5:54:45 4:10:15
M45-49 242 4:31:40 4:47:30 5:00:16 5:17:32 6:01:21 4:28:52
M50-54 163 4:37:48 4:51:06 4:59:12 5:16:18 6:05:34 4:26:33
M55-59 83 4:56:06 5:11:12 5:16:33 5:32:56 6:05:19 4:56:06
M60-64 41 4:51:22 5:34:54 5:36:15 5:55:47 6:32:50 4:51:22
M65-69 14 5:43:36 5:43:36 6:03:50 6:14:23 7:08:30 5:43:36

Women

Age group Finishers Top 1% Top 5% Top 10% Top 20% Median Best
All age groups 765 4:30:06 5:00:49 5:18:02 5:42:17 6:25:26 4:11:56
FPRO 21 4:11:56 4:18:33 4:19:32 4:21:22 4:35:05 4:11:56
F18-24 12 5:59:19 5:59:19 6:13:46 6:15:07 6:44:26 5:59:19
F25-29 65 4:45:39 4:54:42 5:05:53 5:24:04 6:13:26 4:45:39
F30-34 92 4:42:02 4:53:34 5:12:42 5:37:20 6:19:20 4:42:02
F35-39 135 4:44:29 5:04:49 5:16:35 5:33:44 6:14:34 4:43:47
F40-44 155 5:00:39 5:17:30 5:29:49 5:46:25 6:20:20 4:59:12
F45-49 149 5:04:37 5:19:37 5:34:06 5:54:45 6:32:22 4:59:24
F50-54 80 5:13:18 5:27:26 5:51:23 5:59:54 6:27:24 5:13:18
F55-59 33 5:11:15 5:12:19 5:46:25 5:57:30 6:51:13 5:11:15
F60-64 17 5:45:24 5:45:24 6:22:43 6:32:56 7:16:14 5:45:24
F65-69 5 6:19:47 6:19:47 6:19:47 6:19:47 7:14:30 6:19:47

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.