| Hederson Estefani | |
| Birth Date: | 11 September 1991 |
| Height: | 1.83 m[1] |
| Weight: | 65 kg |
| Sport: | Track and field |
| Event: | 400 m, 400 m hurdles |
Hederson Alves Estefani (born 11 September 1991) is a Brazilian athlete competing primarily in the 400 metres and 400 m hurdles.[2] He represented his country at the 2015 World Championships in Beijing without advancing from the first round.
| Representing | ||||||
|---|---|---|---|---|---|---|
| 2008 | South American Youth Championships | Lima, Peru | bgcolor=gold | 1st | 400 m hurdles (84cm) | 51.67 |
| bgcolor=gold | 1st | Medley relay | 1:54.10 | |||
| 2009 | South American Junior Championships | São Paulo, Brazil | bgcolor=gold | 1st | 400 m | 46.20 |
| bgcolor=gold | 1st | 400 m hurdles | 51.07 | |||
| bgcolor=gold | 1st | 4x400 m relay | 3:10.66 | |||
| Pan American Junior Championships | São Paulo, Brazil | 3rd (h) | 400 m | 46.701 | ||
| 4th | 400 m hurdles | 51.11 | ||||
| 2010 | South American Games / 2010 South American U23 Championships | Medellín, Colombia | bgcolor=silver | 2nd | 400 m | 46.85 |
| 4th | 400 m hurdles | 52.43 | ||||
| bgcolor=silver | 2nd | 4x400 m relay | 3:07.11 | |||
| Ibero-American Championships | San Fernando, Spain | bgcolor=silver | 2nd | 4x400 m relay | 3:05.43 | |
| World Junior Championships | Moncton, Canada | 9th (h) | 400 m hurdles | 51.59 | ||
| 2011 | South American Championships | Buenos Aires, Argentina | bgcolor=gold | 1st | 4x400 m relay | 3:08.95 |
| 2012 | Ibero-American Championships | Barquisimeto, Venezuela | 3rd | 400 m hurdles | 49.70 | |
| 4th | 4x400 m relay | 3:03.05 | ||||
| South American U23 Championships | Barquisimeto, Venezuela | bgcolor=gold | 1st | 400 m hurdles | 51.02 | |
| 2013 | South American Championships | Cartagena, Colombia | 3rd | 4x400 m relay | 3:08.60 | |
| 2014 | Ibero-American Championships | São Paulo, Brazil | bgcolor=silver | 2nd | 4x400 m relay | 3:02.80 |
| 2015 | IAAF World Relays | Nassau, Bahamas | 5th | 4x400 m relay | 3:00.96 | |
| South American Championships | Lima, Peru | bgcolor=silver | 2nd | 400 m | 45.57 | |
| bgcolor=silver | 2nd | 400 m hurdles | 49.54 | |||
| Pan American Games | Toronto, Canada | 10th (h) | 400 m hurdles | 51.06 | ||
| 5th | 4x400 m relay | 3:01.18 | ||||
| World Championships | Beijing, China | 30th (h) | 400 m | 45.36 | ||
| 12th (h) | 4x400 m relay | 3:01.05 | ||||
| 2016 | Ibero-American Championships | Rio de Janeiro, Brazil | 15th (h) | 400 m | 61.54 | |
| Olympic Games | Rio de Janeiro, Brazil | 41st (h) | 400 m | 46.68 | ||
| 2017 | World Championships | London, United Kingdom | 25th (h) | 400 m hurdles | 50.22 | |
| 2018 | South American Games | Cochabamba, Bolivia | 4th | 400 m | 46.15 | |
| 2022 | South American Games | Asunción, Paraguay | 3rd | 400 m hurdles | 50.99 | |
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