Race Conditions
The last two years conditions in Tempe were very fast, this year was somewhat slower than that but pretty typical for Arizona: A fast bike followed by a potentially quick but still challenging run. Even in the slightly slower conditions, there was one new course record: Jen Annett posted a 4:38 bike leg, improving last year’s bike course record by Yvonne Van Vlerken by 2.5 minutes.
Male Race Results
As in Kona, Lionel Sanders showed his improved swim: Last year he was five minutes behind after the swim, this year it was just over two minutes. By mile 15 he had taken the lead on the bike and no one was following him. He posted the fastest bike leg and in T2 had a lead of over 10 minutes. He also had the fastest run and won his third IM Arizona in a row. After his disappointing Kona DNF, Brent McMahon had a solid second place race, always being in a good position for a podium finish and then coming through with the second best marathon, but never really in a position to challenge Lionel. Jeremy Jurkiewicz had a good day and claimed the last spot on the podium.
| Rank | Name | Nation | Swim | Bike | Run | Time | Diff to exp. | Prize Money | KPR Points |
| 1 | Lionel Sanders | CAN | 00:51:33 | 04:12:03 | 02:47:15 | 07:54:10 | -11:06 | US$ 15,000 | 2000 |
| 2 | Brent McMahon | CAN | 00:49:05 | 04:26:26 | 02:48:54 | 08:07:40 | 04:20 | US$ 7,500 | 1600 |
| 3 | Jeremy Jurkiewicz | FRA | 00:49:08 | 04:26:26 | 02:56:21 | 08:15:22 | -13:04 | US$ 5,000 | 1280 |
| 4 | Michael Patrick Alonso Mckernan | ESP | 00:53:36 | 04:19:37 | 03:01:29 | 08:19:41 | -21:59 | US$ 3,250 | 960 |
| 5 | Jeff Symonds | CAN | 00:49:39 | 04:34:12 | 02:52:54 | 08:20:38 | 02:56 | US$ 2,750 | 720 |
| 6 | Jonathan Shearon | USA | 00:53:34 | 04:31:48 | 02:57:07 | 08:26:19 | -07:11 | US$ 2,000 | 540 |
| 7 | Jesse Vondracek | USA | 00:53:39 | 04:34:49 | 03:08:22 | 08:40:33 | -15:17 | US$ 1,500 | 405 |
| 8 | Clint Kimmins | AUS | 00:53:27 | 04:37:19 | 03:06:01 | 08:40:51 | -14:00 | US$ 1,250 | 305 |
| 9 | Christian Brader | GER | 00:55:25 | 04:38:01 | 03:06:25 | 08:44:09 | 09:37 | US$ 1,000 | 230 |
| 10 | James Lubinski | USA | 01:02:49 | 04:39:16 | 02:56:21 | 08:44:47 | -21:00 | US$ 750 | 170 |
| 11 | Karl-Johan Danielsson | SWE | 00:53:30 | 04:36:24 | 03:13:11 | 08:47:13 | 01:27 | 120 | |
| 12 | James Capparell | USA | 00:49:33 | 04:46:06 | 03:07:38 | 08:47:34 | -04:15 | 85 | |
| 13 | Charles Maltha | IRL | 00:57:07 | 04:36:02 | 03:15:29 | 08:52:59 | n/a | 60 | |
| 14 | Vincent Morizot | FRA | 00:53:34 | 04:34:44 | 03:25:09 | 08:57:59 | n/a | 40 | |
| 15 | Inaki De La Parra | POL | 00:59:25 | 04:37:12 | 03:25:55 | 09:07:28 | n/a | 30 | |
| 16 | Jonathan Fecik | USA | 00:57:32 | 04:44:07 | 03:24:20 | 09:10:18 | -09:47 | 20 | |
| 17 | Elmar Heger | GER | 00:55:27 | 04:44:57 | 04:22:39 | 10:08:09 | 30:31 | 15 | |
| 18 | Nathan Dressel | USA | 01:05:33 | 05:34:54 | 04:06:40 | 10:54:11 | 56:58 | 10 | |
| Steve Rosinski | USA | 01:00:23 | 04:35:33 | DNF | |||||
| Robbie Wade | IRL | 00:53:41 | 04:45:44 | DNF | |||||
| Sam Holmes | USA | 00:49:44 | 04:59:34 | DNF | |||||
| Andreas Borch | DEN | 00:53:42 | 10:08:35 | DNF | |||||
| Philip Graves | GBR | 00:49:35 | DNF | ||||||
| Tripp Hipple | USA | 00:53:37 | DNF | ||||||
| Victor Del Corral | ESP | 00:57:04 | DNF |
Female Race Results
The Danish duo of Helle Frederiksen and Michelle Vesterby were the fastest swimmers, but it took Kaisa Sali only 50k to make up her four minute gap after the swim and the Scandinavian trio rode together for most of the bike. Jen Annett had an almost ten-minute deficit after the swim, but she took the lead in the last 50k of the bike and was leading into T2. While Michelle had fallen back a bit, Kaisa and Helle closed the gap to Jen and took the lead after 8 miles. In the end, Kaisa was the fastest runner of the day and winning her second Ironman title (and also validating her 2018 Kona slot). Helle Frederiksen continued to run strong to take second place, finishing sub-9 in her debut on the long distance. Jen Annett also finished under 9 hours and took third. Compared to the fast runners in front of her, Michelle Vesterby faded a bit on the run, but she was still able to take fourth place, holding off Sarah Piampiano who finished fifth.
| Rank | Name | Nation | Swim | Bike | Run | Time | Diff to exp. | Prize Money | KPR Points |
| 1 | Kaisa Sali | FIN | 00:56:32 | 04:46:06 | 03:04:39 | 08:51:54 | -01:57 | US$ 15,000 | 2000 |
| 2 | Helle Frederiksen | DEN | 00:52:06 | 04:50:19 | 03:09:09 | 08:55:35 | n/a | US$ 7,500 | 1600 |
| 3 | Jen Annett | CAN | 01:01:44 | 04:38:17 | 03:15:38 | 08:59:27 | -28:49 | US$ 5,000 | 1280 |
| 4 | Michelle Vesterby | DEN | 00:52:07 | 04:51:48 | 03:16:40 | 09:04:42 | -02:53 | US$ 3,250 | 960 |
| 5 | Sarah Piampiano | USA | 01:01:24 | 04:50:32 | 03:11:28 | 09:09:10 | -00:21 | US$ 2,750 | 720 |
| 6 | Katy Evans | USA | 00:54:29 | 05:06:09 | 03:14:10 | 09:19:19 | n/a | US$ 2,000 | 540 |
| 7 | Kelly Williamson | USA | 00:53:38 | 05:27:06 | 03:06:01 | 09:32:09 | 08:28 | US$ 1,500 | 405 |
| 8 | Bianca Steurer | AUT | 00:59:11 | 04:58:05 | 03:30:27 | 09:32:36 | -01:51 | US$ 1,250 | 305 |
| 9 | Natasha Van der Merwe | USA | 01:02:02 | 05:08:33 | 03:22:33 | 09:37:26 | -34:14 | US$ 1,000 | 230 |
| 10 | Erin Green | USA | 01:00:32 | 05:07:20 | 03:35:39 | 09:49:29 | -11:38 | US$ 750 | 170 |
| 11 | Mackenzie Madison | USA | 01:05:12 | 05:03:33 | 03:43:37 | 09:58:27 | 11:13 | 120 | |
| 12 | Sarah Jarvis | GER | 01:00:18 | 05:16:37 | 03:36:27 | 09:58:41 | -00:32 | 85 | |
| 13 | Robyn Hardage | CAN | 01:04:04 | 05:18:05 | 03:31:36 | 09:58:47 | 07:06 | 60 | |
| 14 | Julia Montgomery | SWE | 01:07:44 | 05:18:09 | 03:40:32 | 10:12:35 | -10:07 | 40 | |
| 15 | Caroline Martineau | CAN | 01:04:54 | 05:21:44 | 03:52:52 | 10:26:00 | -13:39 | 30 | |
| 16 | Liz Baugher | USA | 00:59:13 | 05:31:09 | 03:51:38 | 10:27:26 | 02:22 | 20 | |
| 17 | Whitney Burdzilauskas | USA | 01:11:31 | 05:50:57 | 03:57:30 | 11:10:01 | n/a | 15 | |
| 18 | Corina Hengartner | SUI | 01:00:25 | 05:02:51 | 05:03:03 | 11:11:01 | 1:31:41 | 10 | |
| Jodie Robertson | USA | 01:01:31 | 04:57:01 | DNF | |||||
| Melanie McQuaid | CAN | 00:59:25 | 05:04:55 | DNF | |||||
| Aine Donegan | IRL | 01:04:19 | 05:13:06 | DNF | |||||
| Darbi Roberts | USA | 00:56:30 | 06:02:34 | DNF |