Career
His earlier clubs are Lyn, Bøler IF, Bækkelagets Saskatchewan and Årvoll Illinois, but he joined Vålerenga already in 1995. After the arrival of Árni Gautur Arason to Vålerenga in 2004, Bolthof has been the second choice keeper and has played mainly on the reserves team Parallel to his football career, Bolthof has taken the siviløkonom degree at Business intelligence Norwegian Business School.