Duarte da Silva Marques (born December 3, 1983, in Rio Maior) is a triathlete from Portugal.

[1] He competed at the 2008 Summer Olympics in Beijing, where he placed forty-fifth in the men's triathlon, with a time of 1:55:06.

At the peak of his career, Marques has achieved 14 top ten finishes in over fifty competitions, including his championship triumph at the 2007 ITU European Cup in Split, Croatia.

This biographical article related to a Portuguese athlete known for competing in triathlons is a stub.

You can help Wikipedia by expanding it.