Petter Northug at the 2011 Oslo Nordic World Ski Championships

Petter Northug at the 2011 Nordic World Ski Championships in Oslo

Petter Northug at the 2011 Oslo Nordic World Ski Championships

Petter Northug at the 2011 Oslo Nordic World Ski Championships

Petter Northug at the 2011 Oslo Nordic World Ski Championships

Petter Northug at the 2011 Oslo Nordic World Ski Championships

Petter Northug at the 2011 Oslo Nordic World Ski Championships

Petter Northug at the 2011 Oslo Nordic World Ski Championships

Petter Northug at the 2011 Oslo Nordic World Ski Championships

Petter Northug at the 2011 Nordic World Ski Championships in Oslo

Petter Northug at the 2011 Oslo Nordic World Ski Championships

Petter Northug at the 2011 Oslo Nordic World Ski Championships

Petter Northug at the 2011 Oslo Nordic World Ski Championships

Petter Northug at the 2011 Oslo Nordic World Ski Championships

Petter Northug at the 2011 Oslo Nordic World Ski Championships

Petter Northug at the 2011 Oslo Nordic World Ski Championships

Petter Northug at the 2011 Oslo Nordic World Ski Championships