Age-group thresholds

IRONMAN 70.3 Cozumel Day 1 · 1 editions (2021) · 1,159 finishers

Editions: 2021

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 455 4:52:24 5:11:28 5:30:10 5:45:48 6:34:03 4:46:22
M45-49 222 4:51:30 5:04:52 5:18:23 5:37:36 6:15:23 4:46:22
M50-54 147 5:00:38 5:31:45 5:39:20 6:05:46 6:47:05 4:48:38
M55-59 60 4:59:56 5:12:13 5:45:22 5:51:00 6:41:54 4:59:56
M60-64 17 5:34:19 5:34:19 5:34:42 5:43:41 6:55:08 5:34:19
M65-69 6 5:13:20 5:13:20 5:13:20 6:04:32 6:53:39 5:13:20

Women

Age group Finishers Top 1% Top 5% Top 10% Top 20% Median Best
All age groups 704 5:06:12 5:26:20 5:37:18 5:51:58 6:31:53 4:51:34
F18-24 36 5:07:49 5:09:00 5:19:02 5:32:16 6:12:00 5:07:49
F25-29 115 5:02:08 5:09:48 5:26:20 5:43:31 6:19:22 4:51:34
F30-34 140 5:02:47 5:26:49 5:35:25 5:48:23 6:29:49 4:56:58
F35-39 141 5:09:15 5:32:41 5:38:20 5:52:56 6:27:54 4:59:35
F40-44 130 5:13:09 5:35:57 5:41:42 5:55:55 6:33:05 5:06:17
F45-49 68 5:16:41 5:20:40 5:43:33 5:51:47 6:32:20 5:16:41
F50-54 49 5:24:18 5:31:45 5:41:07 6:26:30 7:01:39 5:24:18
F55-59 18 5:38:38 5:38:38 5:56:31 6:24:59 7:00:21 5:38:38
F60-64 6 6:09:53 6:09:53 6:09:53 6:31:34 7:14:25 6:09:53

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.