Last updated: June 2019
- The more races have been run on that course, the more significant the ratings are. However, actual conditions on race day (e.g. waves during the swim, wind or heat) impact the final times.
- The Ratings can be used to compare times from different courses. For example, an 8:38 in Barcelona (course rating of 22 minutes) is a similar performance to a 9:29 in Wales (course rating of -29 minutes). The Ratings are based on a 9-hour Ironman (consisting of a 55 minute swim, a 4:50 bike and a 3:10 run plus five minutes for T1 and T2). For finishes around 12-hours, the numbers should be increased by a third (i.e. 11:31 in Barcelona is comparable to 12:39 in Wales).
| Course | Rating | Swim Rating | Bike Rating | Run Rating | # of Races | Last Race |
| Challenge Madrid | – 35:20 | -02:18 | -27:18 | -05:45 | 2 | 2018-09-23 |
| IM Wales | – 28:43 | 00:57 | -27:18 | -02:23 | 8 | 2018-09-09 |
| IM Lanzarote | – 16:48 | 00:58 | -18:29 | 00:42 | 14 | 2019-05-25 |
| IM Taiwan | – 07:24 | -00:07 | 06:33 | -13:51 | 4 | 2018-10-07 |
| IM Malaysia | – 06:48 | -00:54 | 02:38 | -08:32 | 8 | 2018-11-17 |
| IM Canada | – 05:22 | 00:10 | -03:38 | -01:56 | 6 | 2018-07-29 |
| IM Netherlands | – 05:06 | -00:29 | -04:43 | 00:06 | 4 | 2018-08-05 |
| IM Wisconsin | – 03:22 | -01:33 | -01:48 | -00:01 | 13 | 2018-09-09 |
| IM Lake Placid | – 02:54 | -00:05 | -03:45 | 00:56 | 13 | 2018-07-22 |
| IM Hawaii | – 02:25 | -03:22 | 03:15 | -02:19 | 14 | 2018-10-13 |
| IM UK | – 02:05 | 01:15 | -09:00 | 05:40 | 10 | 2018-07-15 |
| IM France | 02:18 | 00:10 | -02:45 | 04:53 | 14 | 2018-06-24 |
| IM Boulder | 02:21 | -01:45 | 14:23 | -10:17 | 4 | 2019-06-09 |
| IM Mont Tremblant | 03:04 | -01:58 | 04:51 | 00:11 | 7 | 2018-08-19 |
| IM South Africa | 03:25 | -02:03 | 03:53 | 01:35 | 14 | 2019-04-07 |
| IM Hamburg | 05:17 | -00:21 | 00:45 | 04:54 | 2 | 2018-07-29 |
| IM Switzerland | 05:36 | -01:11 | 06:12 | 00:36 | 14 | 2018-07-29 |
| IM Cairns | 05:45 | -00:30 | 06:09 | 00:05 | 9 | 2019-06-09 |
| IM Louisville | 06:09 | 01:15 | 07:12 | -02:18 | 10 | 2018-10-14 |
| IM Australia | 06:41 | 02:46 | 01:01 | 02:55 | 14 | 2019-05-05 |
| IM New Zealand | 07:42 | 00:38 | 02:07 | 04:58 | 13 | 2019-03-02 |
| IM Italy | 07:56 | 01:00 | 06:31 | 00:25 | 2 | 2018-09-22 |
| IM Mar del Plata | 08:46 | -01:15 | 08:23 | 01:39 | 2 | 2018-12-02 |
| IM Cozumel | 09:40 | 04:02 | 07:04 | -01:27 | 9 | 2018-11-18 |
| Challenge Taiwan | 09:59 | -00:52 | 14:29 | -03:37 | 6 | 2019-04-27 |
| IM Chattanooga | 10:53 | 12:46 | 03:05 | -04:58 | 4 | 2018-09-30 |
| IM Germany | 14:27 | 01:56 | 10:17 | 02:14 | 14 | 2018-07-08 |
| IM Arizona | 14:45 | -00:05 | 13:27 | 01:24 | 14 | 2018-11-18 |
| IM Texas | 15:08 | -01:39 | 17:18 | -00:31 | 8 | 2019-04-27 |
| Challenge Almere | 15:35 | 00:59 | 12:02 | 02:35 | 6 | 2018-09-08 |
| IM Western Australia | 16:39 | 00:15 | 14:36 | 01:48 | 14 | 2018-12-02 |
| IM Sweden | 17:06 | 00:07 | 12:21 | 04:38 | 7 | 2018-08-18 |
| IM Austria | 19:26 | 01:51 | 13:32 | 04:03 | 14 | 2018-07-01 |
| Challenge Roth | 20:42 | 01:44 | 13:38 | 05:21 | 14 | 2018-07-01 |
| IM Copenhagen | 20:51 | 01:44 | 14:47 | 04:21 | 9 | 2018-08-19 |
| IM Brasil | 21:56 | 01:39 | 16:07 | 04:10 | 15 | 2019-05-26 |
| IM Barcelona | 22:00 | -00:32 | 20:55 | 01:37 | 5 | 2018-10-07 |
| IM Tallinn | 22:54 | -00:21 | 23:15 | 00:00 | 1 | 2018-08-04 |