ROSA KHUTOR, RUSSIA - Norway's Marit Bjoergen earned her fourth Olympic gold medal by winning the cross-country skiathlon event at the Sochi Winter Games on Saturday.

Dubbed the 'Iron Lady,' the 33-year-old stayed safe in the leading pack for most of the race, which combines skiing 7.5km in classic style and 7.5km in freestyle, until out-sprinting Sweden's Charlotte Kalla in the race to the finish.

Another Norwegian, Heidi Weng, took third place just ahead of World Cup leader and compatriot Therese Johaug, who paid the price of working tirelessly at the front of the pack in the second part of the race.

Bjoergen came home in a time of 38min 33.6sec, 1.8sec ahead of Kalla.