Pine competed for Australia in the 2000, and 2004 and 2008 Summer Olympics. In 2000, he swam in the heats for the gold (4×100 m freestyle relay) and silver (4×100 m medley relay) medal winning relay teams. In 2004, he swam in the 100 m butterfly and was a member of the Australian 4×100 m medley relay team, however this relay team failed to reach the finals.
Pine recited the Athletes Oath at the 2006 Commonwealth Games, this was an appropriate gesture as he has won medals for Australia in the 3 Commonwealth Games leading up to the Melbourne games.
At the age of 31 he qualified for the 2008 Olympics in the 100 m butterfly (52.13). At the 2009 Rome World Championship trials (Australian Long Course swimming trials) Pine swam in the finals finishing 2nd in the 100 m butterfly. This swim was under the A qualifying time for the world championships and earned himself a spot on the Australian World Championship Team.
Pine trained at CISAC in Bruce, ACT registered with the Ginninderra Marlins Swim Club. His coach was Cameron Gledhill. Adam is married to Sasha Pine, the daughter of Olympic swimmers Diana Rickard and Roger van Hamburg. Adam and Sasha both attended Nebraska University in the United States on scholarships. They have three children: Max, Buster and Xander. After retirement from competition, Adam became general manager of community sports. Adam Pine is now the head paralimic coach for Australia.