Updated

Krasnaya Polyana, Russia (SportsNetwork.com) - Darya Domracheva of Belarus secured her third gold medal of the Sochi Olympics Monday after gliding to victory in the women's 12.5-kilometer biathlon mass start competition.

Domracheva, who won the 10-km pursuit and the 15-km individual race earlier in Sochi, turned in a time of 35 minutes, 25.6 seconds, besting Gabriela Soukalova of the Czech Republic by 20.2 seconds.

The reigning mass start world champion, Domracheva used her sharpshooting and swift skiing to create an insurmountable lead. She didn't miss a shot until her final stop, when she was well ahead of the pack.

The 27-year-old Belarusian became the first female biathlete to win three golds at a single Winter Olympics.

Norway's Tiril Eckhoff, making her Olympic debut, finished 7.3 seconds after Soukalova to take bronze.

American Susan Dunklee crossed the finish line in 36:57.9 to place 12th, marking the best ever finish by a U.S. woman in Olympic biathlon competition.

The men's 15-km biathlon mass start, which was originally scheduled for Sunday, was postponed for the second straight day Monday due to dense fog in the area. The men's snowboard cross was also postponed from Monday to Tuesday.