| Name | Event | Round | Time | |
|---|---|---|---|---|
| 1 | Bryan ALVAREZ | 50 S Fly | Prelims | 24.20 |
| 2 | Arnoldo Herrera | 100 S Breast | Prelims | 1:02.39 |
| 3 | Arnoldo Herrera | 200 S Breast | Prelims | 2:15.28 |
| 4 | Juan José Dobles | 50 S Free | Prelims | 22.78 |
| 5 | Esteban Araya | 400 S IM | Prelims | 4:25.00 |
| 6 | Jose David SOLIS ROSALES | 200 S Breast | Prelims | 2:16.02 |
| 7 | Bryan ALVAREZ | 100 S Fly | Prelims | 54.77 |
| 8 | Bryan ALVAREZ | 200 S Fly | Prelims | 2:02.74 |
| 9 | Esteban Araya | 100 S IM | Prelims | 57.44 |
| 10 | Arnoldo Herrera | 50 S Breast | Prelims | 28.65 |
| Name | Event | Round | Time | |
|---|---|---|---|---|
| 1 | Costa Rica | 800 S Free Relay | Prelims | |
| 2 | Costa Rica | 400 S Free Relay | Prelims | |
| Name | Gold | Silver | Bronze | Score | FINA | |
|---|---|---|---|---|---|---|
| 1 | Bryan ALVAREZ | 0 | 0 | 0 | – | 705.0 |
| 2 | Arnoldo Herrera | 0 | 0 | 0 | – | 699.7 |
| 3 | Esteban Araya | 0 | 0 | 0 | – | 688.0 |
| 4 | Juan Jose Dobles | 0 | 0 | 0 | – | 686.5 |
| 5 | Jose David SOLIS ROSALES | 0 | 0 | 0 | – | 649.7 |
