| Date | 8 October 2018 — 11:00 | |
|---|---|---|
| Status | YOG | |
| Location | Bosques de Palermo, Green Park, Palermo, Buenos Aires | |
| Participants | 32 from 32 countries | |
| Format | 750 metre swim, followed by 20 km bike, and then 5 km run. | |
| Pos | Competitor | NOC | Time | |||
|---|---|---|---|---|---|---|
| 1 | Dylan McCullough | NZL | 53:27 | Gold | ||
| 2 | Alexandre Montez | POR | 53:39 | Silver | ||
| 3 | Alessio Crociani | ITA | 53:45 | Bronze | ||
| 4 | Andreas Carlsson | SWE | 53:53 | |||
| 5 | Baptiste Passemard | FRA | 54:26 | |||
| 6 | Igor Bellido | ESP | 54:43 | |||
| 7 | Drew Shellenberger | USA | 54:47 | |||
| 8 | Cristóbal Baeza | CHI | 54:59 | |||
| 9 | Henry Graf | GER | 55:07 | |||
| 10 | Calum Young | GBR | 55:12 | |||
| 11 | Cristian Triana | COL | 55:28 | |||
| 12 | Javier de la Peña | MEX | 55:45 | |||
| 13 | Gergely Kiss | HUN | 55:58 | |||
| 14 | Loic Triponez | SUI | 56:19 | |||
| 15 | Itamar Shevach Levanon | ISR | 56:52 | |||
| 16 | Solen Wood | CAN | 56:56 | |||
| 17 | Gabriel Terán | ECU | 56:58 | |||
| 18 | Joshua Ferris | AUS | 57:08 | |||
| 19 | Jan Škrjanc | SLO | 57:19 | |||
| 20 | Pedro Boff | BRA | 57:26 | |||
| 21 | Christiaan Stroebel | RSA | 57:34 | |||
| 22 | Alejandro Rodríguez | CUB | 57:40 | |||
| 23 | Teppei Tokuyama | JPN | 57:50 | |||
| 24 | Rik Malcorps | BEL | 58:23 | |||
| 25 | Mohamed Aziz Sebai | TUN | 58:54 | |||
| 26 | Daniil Zubtsov | KAZ | 59:07 | |||
| 27 | Mohamed Tarek | EGY | 59:42 | |||
| 28 | Hung Tik Long | HKG | 1-00:13 | |||
| 29 | Chong Xian Hao | MAS | 1-00:25 | |||
| 30 | Zakaria Alkharrat | SYR | 1-02:34 | |||
| 31 | Giannon Eights | ARU | 1-02:34 | |||
| Dominic Pugliese | ISV | – |