Sérgio Vieira (born 20 February 1976) is a Portuguese race walker. His twin brother João Vieira is a race walker as well.[1]
| Year | Competition | Venue | Position | Event | Notes |
|---|---|---|---|---|---|
| Representing Portugal | |||||
| 2007 | World Championships | Osaka, Japan | — | 20 km | DNF |
| 2008 | World Race Walking Cup | Cheboksary, Russia | 18th | 20 km | |
| Olympic Games | Beijing, PR China | 45th | 20 km | ||
| 2009 | European Race Walking Cup | Metz, France | — | 20 km | DNF |
| World Championships | Berlin, Germany | 27th | 20 km | ||
| 2010 | European Championships | Barcelona, Spain | 21st | 20 km | |