Sven Zacek / People in a cross-country skiing competition. Tartu, Estonia, Europe, February.

Uri Golman / Photographer Uri Golman on cross country skies in snow blizzard, Scoresbysund, North East Greenland, March 2009. Model released

Jerry Monkman / A man cross country skiing along the coast at Odiorne Point State Park in Rye, New Hampshire, USA. Model Released. winter 2007

Jorma Luhta / Cross country skier and aurora borealis colours in night sky, northern Finland, winter

Mark Hamblin / 2020VISION / Cross-country skier on snow. Cairngorms National Park, Scotland, December 2011.

David Noton / Man and woman on mountain bikes cycling on Hambledon Hill above the Blackmore Vale, Dorset, England, UK. June 2005.

Orsolya Haarberg / Child cross country skiing, Sandnessjoen (Donna Island in distance), Alstahaug, Helgeland, Nordland, Norway, February 2009

Sven Zacek / People in a cross-country skiing competition. Tartu, Estonia, Europe, February.

Niall Benvie / Legs of man Cross country skiing, Angus, Scotland, UK, November

Niall Benvie / Legs of man Cross country skiing, Angus, Scotland, UK, November

Shattil & Rozinski / Cross country skier, skiing with two dogs, Brush Creek Ranch, Saratoga, Wyoming, USA, February 2010

Ernie Janes / Galloping horse and rider competing in cross country event, Norfolk, UK, April 2009