Grupo Sportivo de Loures is a Portuguese football club based in Loures that competes in the First Division.
Loures was founded on 13 August 1913 by local footballers who used to play in a plot of land called Casaréus in Loures. Their first ever game was a 3âÂÂ1 friendly win over Sporting CP. In the 1950s, the club added facilities for cycling, athletics, table tennis, and roller hockey. In 1978 they added handball, and in 2004 futsal.
Castrense's colours are yellow and black.