The men's marathon event at the 2003 Pan American Games took place on Saturday, 9 August 2003. Brazil's title defender Vanderlei de Lima once again proved to be the best marathoner, clocking a winning time of 2h 19m 08s. Medalists Records Results See also Athletics at the 2003 Pan American Games – Women's marathon 2003 World Championships in Athletics – Men's Marathon Athletics at the 2004 Summer Olympics – Men's marathon References Results Marathon, Men's 2003 Panamerican 2003 Panamerican Games