| Date | 7 October 2018 — 11:00 | |
|---|---|---|
| Status | YOG | |
| Location | Bosques de Palermo, Green Park, Palermo, Buenos Aires | |
| Participants | 32 from 31 countries | |
| Format | 750 metre swim, followed by 20 km bike, and then 5 km run. | |
| Pos | Competitor | NOC | Time | |||
|---|---|---|---|---|---|---|
| 1 | Amber Schlebusch |  RSA | 58:45 | Gold | ||
| 2 | Sif Bendix Madsen |  DEN | 58:56 | Silver | ||
| 3 | Anja Weber |  SUI | 59:36 | Bronze | ||
| 4 | Eva Daniels |  LUX | 59:49 | |||
| 5 | Paula Vega |  ECU | 59:49 | |||
| 6 | Barbara de Koning |  NED | 1-00:32 | |||
| 7 | Émilie Noyer |  FRA | 1-00:37 | |||
| 8 | Marie Horn |  GER | 1-00:41 | |||
| 9 | Brea Roderick |  NZL | 1-00:55 | |||
| 10 | Hanne Peeters |  BEL | 1-01:02 | |||
| 11 | Emma Middleditch |  SGP | 1-01:04 | |||
| 12 | Sofía Rodríguez |  MEX | 1-01:06 | |||
| 13 | Nikolett Ferenczi |  HUN | 1-01:25 | |||
| 14 | Giovanna Lacerda |  BRA | 1-01:27 | |||
| 15 | Alevtina Stetsenko |  RUS | 1-01:48 | |||
| 16 | Chiara Lobba |  ITA | 1-02:02 | |||
| 17 | Karina Clemant |  VEN | 1-02:18 | |||
| 18 | Charlotte Derbyshire |  AUS | 1-02:36 | |||
| 19 | Lee Jeong-Won |  KOR | 1-02:45 | |||
| 20 | Yu Xinying |  CHN | 1-02:49 | |||
| 21 | Delfina Orlandini |  ARG | 1-03:04 | |||
| 22 | Inês Rico |  POR | 1-03:17 | |||
| 23 | Libby Coleman |  GBR | 1-03:43 | |||
| 24 | María Fernanda Barbosa |  COL | 1-04:26 | |||
| 25 | Maki Uchida |  JPN | 1-05:20 | |||
| 26 | Niuska Figueredo |  CUB | 1-06:03 | |||
| 27 | Lo Ho Yan |  HKG | 1-06:08 | |||
| 28 | Syrine Fattoum |  USA | 1-06:11 | |||
| 29 | Enya Noël |  GRN | 1-08:02 | |||
| 30 | Naomi Espinoza |  PER | 1-10:01 | |||
| Maram Yasseer Mohamed |  EGY | – | ||||
| Parker Albright | USA | – |
