thurmann represented germany at the 2008 summer olympics in beijing, where she competed in the women's 25 m pistol, along with her teammate munkhbayar dorjsuren, who eventually won the bronze medal in the final. she finished only in twenty-third place by one point ahead of italy's maura genovesi from the final attempt, for a total score of 576 points (291 in the precision stage and 285 in the rapid fire).