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(R-L) Marit Bjoergen, Therese Johaug and Heidi Weng of Norway compete in the Ladies' Skiathlon 7.5 km Classic + 7.5 km Free during day one of the Sochi 2014 Winter Olympics at Laura Cross-country Ski & Biathlon Center on February 8, 2014 in Sochi, Russia. (Photo by Richard Heathcote/Getty Images) ( 467792215 )

Skiers compete in the Women's Cross-Country Skiing 7,5km + 7,5km Skiathlon at the Laura Cross-Country Ski and Biathlon Center during the Sochi Winter Olympics on February 8, 2014 in Rosa Khutor. (KIRILL KUDRYAVTSEV/AFP/Getty Images) ( 526785270 )

Charlotte Kalla of Sweden leads Marit Bjoergen of Norway as they descend towards the finish line during the Ladies' Skiathlon 7.5 km Classic + 7.5 km Free during day one of the Sochi 2014 Winter Olympics at Laura Cross-country Ski & Biathlon Center on February 8, 2014 in Sochi, Russia. (Photo by Harry How/Getty Images) ( 467795861 )

Marit Bjoergen (L) of Norway is congratulated by Charlotte Kalla of Sweden after winning gold in the Ladies' Skiathlon 7.5 km Classic + 7.5 km Free during day one of the Sochi 2014 Winter Olympics at Laura Cross-country Ski & Biathlon Center on February 8, 2014 in Sochi, Russia. (Photo by Harry How/Getty Images) ( 467849445 )

Marit Bjoergen of Norway takes 1st place, Charlotte Kalla of Sweden takes 2nd place, Heidi Weng of Norway takes 3rd place during the Cross-Country Women's Skiathlon at the Laura Cross-country Ski & Biathlon Center on February 08, 2014 in Sochi, Russia. (Photo by Vianney Thibaut/Agence Zoom/Getty Images) ( 467823417 )

(LtoR) Second placed Sweden's Charlotte Kalla, winner Norway's Marit Bjoergen and Norway's Heidi Weng celebrate during the flower ceremony after the Women's Cross-Country Skiing 7,5km + 7,5km Skiathlon at the Laura Cross-Country Ski and Biathlon Center during the Sochi Winter Olympics on February 8, 2014 in Rosa Khutor. (ODD ANDERSEN/AFP/Getty Images) ( 526786450 )

(L-R) Charlotte Kalla of Sweden, Marit Bjoergen of Norway and Therese Johaug of Norway compete in the Ladies' Skiathlon 7.5 km Classic + 7.5 km Free during day one of the Sochi 2014 Winter Olympics at Laura Cross-country Ski & Biathlon Center on February 8, 2014 in Sochi, Russia. (Photo by Richard Heathcote/Getty Images) ( 467796257 )

Competitors lie in the snow next to the finish line after competing in the Ladies' Skiathlon 7.5 km Classic + 7.5 km Free during day one of the Sochi 2014 Winter Olympics at Laura Cross-country Ski & Biathlon Center on February 8, 2014 in Sochi, Russia. (Photo by Harry How/Getty Images) ( 467805921 )

United States' Julia Mancuso approaches the finish area during a women's downhill training run for the Sochi 2014 Winter Olympics, Saturday, Feb. 8, 2014, in Krasnaya Polyana, Russia. (AP Photo/Gero Breloer) ( Sochi Olympics Biathlon Women )

Second placed Sweden's Charlotte Kalla celebrates after the Women's Cross-Country Skiing 7,5km + 7,5km Skiathlon at the Laura Cross-Country Ski and Biathlon Center during the Sochi Winter Olympics on February 8, 2014 in Rosa Khutor. (ALBERTO PIZZOLI/AFP/Getty Images) ( 526785501 )

Skiers compete in the Women's Cross-Country Skiing 7,5km + 7,5km Skiathlon at the Laura Cross-Country Ski and Biathlon Center during the Sochi Winter Olympics on February 8, 2014 in Rosa Khutor. (KIRILL KUDRYAVTSEV/AFP/Getty Images) ( 526785852 )

Heidi Weng and Therese Johaug of Norway collapse in the snow after competing in the Ladies' Skiathlon 7.5 km Classic + 7.5 km Free during day one of the Sochi 2014 Winter Olympics at Laura Cross-country Ski & Biathlon Center on February 8, 2014 in Sochi, Russia. (Photo by Harry How/Getty Images) ( 467805813 )

Norway's Marit Bjoergen competes in the Women's Cross-Country Skiing 7,5km + 7,5km Skiathlon at the Laura Cross-Country Ski and Biathlon Center during the Sochi Winter Olympics on February 8, 2014 in Rosa Khutor. (KIRILL KUDRYAVTSEV/AFP/Getty Images) ( 526785211 )

Norway's Marit Bjoergen (R) competes in the Women's Cross-Country Skiing 7,5km + 7,5km Skiathlon at the Laura Cross-Country Ski and Biathlon Center during the Sochi Winter Olympics on February 8, 2014 in Rosa Khutor. (ALBERTO PIZZOLI/AFP/Getty Images) ( 526784685 )

(R-L) Marit Bjoergen, Therese Johaug and Heidi Weng of Norway compete in the Ladies' Skiathlon 7.5 km Classic + 7.5 km Free during day one of the Sochi 2014 Winter Olympics at Laura Cross-country Ski & Biathlon Center on February 8, 2014 in Sochi, Russia. (Photo by Richard Heathcote/Getty Images) ( 467792191 )

Switzerland's Dominique Gisin crouches in the finish area after a women's downhill training run for the 2014 Sochi Winter Olympics, Saturday, Feb. 8, 2014, in Krasnaya Polyana, Russia. (AP Photo/Gero Breloer) ( Sochi Olympics Biathlon Women )

Sweden's Charlotte Kalla, Norway's Marit Bjoergen and Norway's Heidi Weng celebrate after the Women's Cross-Country Skiing 7,5km + 7,5km Skiathlon at the Laura Cross-Country Ski and Biathlon Center during the Sochi Winter Olympics on February 8, 2014 in Rosa Khutor. (ODD ANDERSEN/AFP/Getty Images) ( 526786087 )

Cross-Country skiers compete in the Ladies' Skiathlon 7.5 km Classic + 7.5 km Free during day one of the Sochi 2014 Winter Olympics at Laura Cross-country Ski & Biathlon Center on February 8, 2014 in Sochi, Russia. (Photo by Harry How/Getty Images) ( 467795785 )

Norway's Therese Johaug competes in the Women's Cross-Country Skiing 7,5km + 7,5km Skiathlon at the Laura Cross-Country Ski and Biathlon Center during the Sochi Winter Olympics on February 8, 2014 in Rosa Khutor. (ALBERTO PIZZOLI/AFP/Getty Images) ( 526784697 )

Marit Bjoergen (bottom) of Norway, Charlotte Kalla (C) of Sweden and Therese Johaug of Norway collapse on the snow after competing in the Ladies' Skiathlon 7.5 km Classic + 7.5 km Free during day one of the Sochi 2014 Winter Olympics at Laura Cross-country Ski & Biathlon Center on February 8, 2014 in Sochi, Russia. (Photo by Clive Mason/Getty Images) ( 467790597 )

Volunteers bring flowers for the flower ceremony after the Women's Cross-Country Skiing 7,5km + 7,5km Skiathlon at the Laura Cross-Country Ski and Biathlon Center during the Sochi Winter Olympics on February 8, 2014 in Rosa Khutor. (ODD ANDERSEN/AFP/Getty Images) ( 526786288 )

Norway's fans wave with national flag during the Women's Cross-Country Skiing 7,5km + 7,5km Skiathlon at the Laura Cross-Country Ski and Biathlon Center during the Sochi Winter Olympics on February 8, 2014 in Rosa Khutor. (ODD ANDERSEN/AFP/Getty Images) ( 526786332 )

Silver medalist Charlotte Kalla of Sweden celebrates on the podium during the flower ceremony for the Ladies' Skiathlon 7.5 km Classic + 7.5 km Free during day one of the Sochi 2014 Winter Olympics at Laura Cross-country Ski & Biathlon Center on February 8, 2014 in Sochi, Russia. (Photo by Clive Mason/Getty Images) ( 467797579 )

Cross-Country skiers compete in the Ladies' Skiathlon 7.5 km Classic + 7.5 km Free during day one of the Sochi 2014 Winter Olympics at Laura Cross-country Ski & Biathlon Center on February 8, 2014 in Sochi, Russia. (Photo by Harry How/Getty Images) ( 467809657 )

Marit Bjoergen of Norway approaches the finish line ahead of Charlotte Kalla of Sweden to win gold in the Ladies' Skiathlon 7.5 km Classic + 7.5 km Free during day one of the Sochi 2014 Winter Olympics at Laura Cross-country Ski & Biathlon Center on February 8, 2014 in Sochi, Russia. (Photo by Clive Mason/Getty Images) ( 467786091 )

(L-R) Silver medalist Charlotte Kalla of Sweden, gold medalist Marit Bjoergen of Norway and bronze medalist Heidi Weng of Norway celebrate on the podium during the flower ceremony for the Ladies' Skiathlon 7.5 km Classic + 7.5 km Free during day one of the Sochi 2014 Winter Olympics at Laura Cross-country Ski & Biathlon Center on February 8, 2014 in Sochi, Russia. (Photo by Clive Mason/Getty Images) ( 467791713 )

Bronze medalist Heidi Weng of Norway celebrates on the podium during the flower ceremony for the Ladies' Skiathlon 7.5 km Classic + 7.5 km Free during day one of the Sochi 2014 Winter Olympics at Laura Cross-country Ski & Biathlon Center on February 8, 2014 in Sochi, Russia. (Photo by Harry How/Getty Images) ( 467805971 )

Silver medalist Charlotte Kalla of Sweden celebrates after the Ladies' Skiathlon 7.5 km Classic + 7.5 km Free during day one of the Sochi 2014 Winter Olympics at Laura Cross-country Ski & Biathlon Center on February 8, 2014 in Sochi, Russia. (Photo by Clive Mason/Getty Images) ( 467804677 )

Skiers compete by the Olympic Rings in the Women's Cross-Country Skiing 7,5km + 7,5km Skiathlon at the Laura Cross-Country Ski and Biathlon Center during the Sochi Winter Olympics on February 8, 2014 in Rosa Khutor. (KIRILL KUDRYAVTSEV/AFP/Getty Images) ( 526785849 )