Sonja Oberem, née Krolik (born 24 February 1973 in Rheydt) is a German athlete, who specialized in the marathon races. In her younger days she was a successful triathlete. Achievements Personal bests Half Marathon - 1:10:13 hrs (1996) Marathon - 2:26:13 hrs (2001) External links Leverkusen who's who marathoninfo 1973 births Living people German female long-distance runners German female marathon runners German female triathletes Olympic athletes of Germany Athletes (track and field) at the 1996 Summer Olympics Athletes (track and field) at the 2000 Summer Olympics Sportspeople from Mönchengladbach European Athletics Championships medalists