| Alfredo Sepúlveda | |
| Fullname: | Alfredo Emilio Sepúlveda Sandoval |
| Birth Date: | 3 August 1993 |
| Birth Place: | Valparaíso, Chile |
| Height: | 1.79 m[1] |
| Weight: | 75 kg |
| Sport: | Athletics |
| Event: | 400 m hurdles |
| Education: | University of Chile |
Alfredo Emilio Sepúlveda Sandoval (born 3 August 1993) is a Chilean athlete specialising in the 400 metres hurdles. He won a silver medal at the 2018 South American Games in a new national record of 49.62.
| Representing | ||||||
|---|---|---|---|---|---|---|
| 2010 | South American Youth Championships | Santiago, Chile | bgcolor=gold | 1st | 400 m hurdles (84 cm) | 53.6 |
| 2012 | World Junior Championships | Barcelona, Spain | 43rd (h) | 400 m hurdles | 53.43 | |
| 2014 | South American Games | Santiago, Chile | 6th | 400 m hurdles | 52.68 | |
| 4th | 4 × 400 m relay | 3:16.98 | ||||
| South American U23 Championships | Montevideo, Uruguay | 3rd | 400 m hurdles | 51.56 | ||
| bgcolor=silver | 2nd | 4 × 400 m relay | 3:11.93 | |||
| 2015 | Pan American Games | Toronto, Canada | 16th (h) | 400 m hurdles | 52.32 | |
| 10th (h) | 4 × 400 m relay | 3:09.89 | ||||
| Universiade | Gwangju, South Korea | 14th (sf) | 400 m hurdles | 51.32 | ||
| 2016 | Ibero-American Championships | Rio de Janeiro, Brazil | 6th | 400 m hurdles | 49.86 | |
| 4th | 4 × 400 m relay | 3:07.56 | ||||
| 2017 | South American Championships | Asunción, Paraguay | 3rd | 400 m hurdles | 50.37 | |
| 4th | 4 × 400 m relay | 3:13.64 | ||||
| Universiade | Taipei, Taiwan | 21st (sf) | 400 m hurdles | 52.26 | ||
| 2018 | South American Games | Cochabamba, Bolivia | bgcolor=silver | 2nd | 400 m hurdles | 49.62 |
| 3rd | 4 × 400 m relay | 3:11.58 | ||||
| Ibero-American Championships | Trujillo, Peru | 8th | 400 m hurdles | 51.51 | ||
| bgcolor=gold | 1st | 4 × 400 m relay | 3:10.77 | |||
| 2019 | South American Championships | Lima, Peru | bgcolor=silver | 2nd | 400 m hurdles | 50.03 |
| 3rd | 4 × 400 m relay | 3:11.84 | ||||
| 2021 | South American Championships | Guayaquil, Ecuador | 4th | 400 m hurdles | 51.69 | |
| 2022 | Ibero-American Championships | La Nucía, Spain | 4th | 400 m hurdles | 50.35 | |
| Bolivarian Games | Valledupar, Colombia | bgcolor=silver | 2nd | 400 m hurdles | 50.25 | |
| 5th | 4 × 400 m relay | 3:11.92 | ||||
| South American Games | Asunción, Paraguay | 5th | 400 m hurdles | 51.69 | ||
| 4th | 4 × 400 m relay | 3:10.00 | ||||
| 2023 | Pan American Games | Santiago, Chile | 12th (h) | 400 m hurdles | 52.34 | |
| 2024 | Ibero-American Championships | Cuiabá, Brazil | 8th | 400 m hurdles | 53.03 | |
| – | 4 × 400 m relay | DQ | ||||
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