# Hederson Estefani

Hederson Alves Estefani (born 11 September 1991) is a Brazilian athlete competing primarily in the 400 metres and 400 m hurdles. He represented his country at the 2015 World Championships in Beijing without advancing from the first round.

## International competitions

| Year | Competition | Venue | Position | Event | Notes |
| Representing Brazil ||||||
| 2008 | South American Youth Championships | Lima, Peru | 1st | 400 m hurdles (84 cm) | 51.67 |
| 2008 | South American Youth Championships | Lima, Peru | 1st | Medley relay | 1:54.10 |
| 2009 | South American Junior Championships | São Paulo, Brazil | 1st | 400 m | 46.20 |
| 2009 | South American Junior Championships | São Paulo, Brazil | 1st | 400 m hurdles | 51.07 |
| 2009 | South American Junior Championships | São Paulo, Brazil | 1st | 4x400 m relay | 3:10.66 |
| 2009 | Pan American Junior Championships | São Paulo, Brazil | 3rd (h) | 400 m | 46.70$^1$ |
| 2009 | Pan American Junior Championships | São Paulo, Brazil | 4th | 400 m hurdles | 51.11 |
| 2010 | South American Games / 2010 South American U23 Championships | Medellín, Colombia | 2nd | 400 m | 46.85 |
| 2010 | South American Games / 2010 South American U23 Championships | Medellín, Colombia | 4th | 400 m hurdles | 52.43 |
| 2010 | South American Games / 2010 South American U23 Championships | Medellín, Colombia | 2nd | 4x400 m relay | 3:07.11 |
| 2010 | Ibero-American Championships | San Fernando, Spain | 2nd | 4x400 m relay | 3:05.43 |
| 2010 | World Junior Championships | Moncton, Canada | 9th (h) | 400 m hurdles | 51.59 |
| 2011 | South American Championships | Buenos Aires, Argentina | 1st | 4x400 m relay | 3:08.95 |
| 2012 | Ibero-American Championships | Barquisimeto, Venezuela | 3rd | 400 m hurdles | 49.70 |
| 2012 | Ibero-American Championships | Barquisimeto, Venezuela | 4th | 4x400 m relay | 3:03.05 |
| 2012 | South American U23 Championships | Barquisimeto, Venezuela | 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 | 2nd | 4x400 m relay | 3:02.80 |
| 2015 | IAAF World Relays | Nassau, Bahamas | 5th | 4x400 m relay | 3:00.96 |
| 2015 | South American Championships | Lima, Peru | 2nd | 400 m | 45.57 |
| 2015 | South American Championships | Lima, Peru | 2nd | 400 m hurdles | 49.54 |
| 2015 | Pan American Games | Toronto, Canada | 10th (h) | 400 m hurdles | 51.06 |
| 2015 | Pan American Games | Toronto, Canada | 5th | 4x400 m relay | 3:01.18 |
| 2015 | World Championships | Beijing, China | 30th (h) | 400 m | 45.36 |
| 2015 | World Championships | Beijing, China | 12th (h) | 4x400 m relay | 3:01.05 |
| 2016 | Ibero-American Championships | Rio de Janeiro, Brazil | 15th (h) | 400 m | 61.54 |
| 2016 | 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 |
$^1$Disqualified in the final

## Personal bests

Outdoor
* 400 metres – 45.25 (São Paulo 2012)
* 400 metres hurdles – 49.40 (São Bernardo do Campo 2015)