Baltzersen qualified for the Danish squad in men's BMX cycling at the 2008 Summer Olympics in Beijing by receiving an invitational berth from the Union Cycliste Internationale (UCI) based on his best performance at the UCI World Championships in Victoria, British Columbia, Canada. After he grabbed a twenty-ninth seed on the morning prelims with a time of 37.635, Baltzersen scored a total of 16 placing points to mount a fifth spot in his quarterfinal heat, narrowly missing a spot for the semifinal rounds by two tokens.