Ironman
Ironman (3.8 / 180 / 42.2 km) · N. America
Official website: ironman.com/races/im-chattanooga
Ironman Chattanooga is a full-distance Ironman triathlon in United States, part of the Ironman calendar. The next edition is on 27 September 2026. The course is 3.8 km of swimming, 180 km on the bike and 42.195 km of running.
Climbing adds up to 2246 m, 1919 m on the bike and 327 m on the run, a demanding profile for the distance. The course is described as hilly.
Water temperature is typically around 25 °C, above the 24.5 °C limit, so wetsuits are not permitted for age-group athletes.
Pacer Quest rates Ironman Chattanooga as Hard: 2246 m of climbing (high); water 25 °C (no wetsuit); finishers +6% slower than the average Ironman. The rating is automatic and compares total climbing for the distance, water temperature and, where results exist, how finishers compare with the average for that distance.
At the 2025 edition, 55 qualifying slots were shared among 1300 ranked finishers, with slots allocated by age-graded rank under IRONMAN's performance-based system. For example, a M40-44 athlete needed roughly 9:37:14 and a F40-44 athlete needed roughly 9:36:17 to be inside the line.
Open the Race Lab to simulate this course with your own swim, bike and run paces, or use the Qualify module to place your time against these results. Registration and official details are on the organiser's website.
| Age group | Finishers | Fastest | Median | Qualifying time (est.) |
|---|---|---|---|---|
| M18-24 | 45 | 9:04:10 | 12:41:27 | 9:36:21 |
| M25-29 | 139 | 8:36:30 | 12:45:27 | 9:23:24 |
| M30-34 | 127 | 8:15:23 | 12:56:28 | 9:18:57 |
| M35-39 | 152 | 8:46:09 | 12:58:11 | 9:24:52 |
| M40-44 | 162 | 9:00:05 | 13:33:20 | 9:37:14 |
| M45-49 | 126 | 9:11:02 | 13:03:14 | 9:54:33 |
| M50-54 | 118 | 9:14:09 | 14:08:57 | 10:20:55 |
| M55-59 | 81 | 10:07:13 | 13:45:57 | 10:44:55 |
| M60-64 | 50 | 10:46:33 | 14:10:05 | 11:16:31 |
| M65-69 | 9 | 12:20:11 | 14:05:41 | 12:20:08 |
| M70-74 | 6 | 12:38:25 | 15:20:49 | 13:32:53 |
| M75-79 | 4 | 12:55:07 | 15:04:26 | 13:45:52 |
| F18-24 | 20 | 11:34:05 | 13:52:58 | 9:45:43 |
| F25-29 | 30 | 10:46:36 | 13:19:11 | 9:19:57 |
| F30-34 | 28 | 10:51:25 | 13:57:16 | 9:18:57 |
| F35-39 | 37 | 9:39:29 | 13:26:11 | 9:25:54 |
| F40-44 | 50 | 10:01:55 | 14:22:43 | 9:36:17 |
| F45-49 | 39 | 11:37:54 | 14:07:43 | 9:50:13 |
| F50-54 | 39 | 11:07:55 | 14:50:16 | 10:17:33 |
| F55-59 | 21 | 11:52:12 | 14:33:40 | 10:45:03 |
| F60-64 | 11 | 13:13:51 | 14:51:24 | 11:35:07 |
| F65-69 | 5 | 13:13:24 | 15:16:17 | 12:14:52 |
| F70-74 | 1 | 15:29:48 | 15:29:48 | 12:59:14 |
Qualifying time (est.) = the finishing time whose age-graded rank (IRONMAN official factors) lands on the last slot at this edition, derived from published results — the same method as the Pacer Quest Qualify tool. Actual slot allocation and roll-down vary by race and year. Race results data: CoachCox IM Stats.
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