The La grande Odyssee sled dog race in France is the most gruelling sled dog race in the world. Mushers and dogs need to cover 1,000km in 11 days, across the Alps. Tough, gruelling and exhausting, but it does make for beautiful pictures.

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La Grande Odyssee Sled Dog Race 2012

A dog barks before the start of the seventh stage of the La Grande Odyssee sled dog race in Lanslebourg January 14, 2012. The race crosses the Alps in France covering more than 1,000 km (621 miles) over 11 days. REUTERS/Denis Balibouse

La Grande Odyssee Sled Dog Race 2012

French musher Aurelien Berbesson prepares his dogs in his van before the start of the seventh stage of La Grande Odyssee sled dog race in Lanslebourg January 14, 2012. The race crosses the Alps in France covering over 1,000 km (621 miles) over 11 days. REUTERS/Denis Balibouse

La Grande Odyssee Sled Dog Race 2012

A musher and his dogs run for the start of the seventh stage of La Grande Odyssee sled dogs race in Lanslebourg January 14, 2012. The race crosses the Alps in France covering more than 1,000 km (621 miles) over 11 days. REUTERS/Denis Balibouse

La Grande Odyssee Sled Dog Race 2012

Dogs run during the seventh stage of La Grande Odyssee sled dog race near Mont-Cenis January 15, 2012. The race crosses the Alps in France covering over 1000 km (621 miles) over 11 days. REUTERS/Denis Balibouse

La Grande Odyssee Sled Dog Race 2012

A musher and his dogs run next to the Mon-Cenis Lake during the seventh stage of La Grande Odyssee sled dog race near Mont-Cenis January 15, 2012. The race crosses the Alps in France covering over 1000 km (621 miles) over 11 days. REUTERS/Denis Balibouse

La Grande Odyssee Sled Dog Race 2012

A musher and his dogs climb the Mont-Cenis Path during the seventh stage of the La Grande Odyssee sled dogs race in Mont-Cenis January 14, 2012. The race crosses the Alps in France covering over 1000 km (621 miles) over 11 days. Picture taken with a fisheye lens. REUTERS/Denis Balibouse

La Grande Odyssee Sled Dog Race 2012

A musher and his dogs climb the Mont-Cenis Path during the seventh stage of the La Grande Odyssee sled dogs race in Mont-Cenis January 14, 2012. The race crosses the Alps in France covering over 1,000 km (621 miles) over 11 days. REUTERS/Denis Balibouse

La Grande Odyssee Sled Dog Race 2012

A view of mushers prepare their dogs at the Polar Base at sunrise before the second part of the seventh stage of La Grande Odyssee sled dog race in Mont-Cenis January 15, 2012. The race crosses the Alps in France covering over 1000 km (621 miles) over 11 days. REUTERS/Denis Balibouse

La Grande Odyssee Sled Dog Race 2012

A musher prepares food for his dogs before the seventh stage of La Grande Odyssee sled dog race near Mont-Cenis January 15, 2012. The race crosses the Alps in France covering over 1000 km (621 miles) over 11 days. REUTERS/Denis Balibouse

La Grande Odyssee Sled Dog Race 2012

Dogs fight before the second part of the seventh stage of La Grande Odyssee sled dog race in Mont-Cenis January 15, 2012. The race crosses the Alps in France covering over 1000 km (621 miles) over 11 days. REUTERS/Denis Balibouse

La Grande Odyssee Sled Dog Race 2012

Dogs pant while their musher fixes a problem during the seventh stage of La Grande Odyssee sled dog race near Mont-Cenis January 15, 2012. The race crosses the Alps in France covering over 1000 km (621 miles) over 11 days. REUTERS/Denis Balibouse

La Grande Odyssee Sled Dog Race 2012

Swiss musher Marc Tercier overtakes Antoine Lemoine of France (L) during the seventh stage of La Grande Odyssee sled dog race near Mont-Cenis January 15, 2012. The race crosses the Alps in France covering over 1000 km (621 miles) over 11 days. REUTERS/Denis Balibouse

La Grande Odyssee Sled Dog Race 2012

A musher and his dogs run through the village of Bonneval-sur-Arc during the eighth stage of La Grande Odyssee sled dogs race January 16, 2012. The race crosses the Alps in France covering over 1000 km (621 miles) over 11 days. REUTERS/Denis Balibouse

La Grande Odyssee Sled Dog Race 2012

Mushers and their dogs start the eighth stage of the La Grande Odyssee sled dogs race near Bessans January 16, 2012. The race crosses the Alps in France covering over 1000 km (621 miles) over 11 days. REUTERS/Denis Balibouse

La Grande Odyssee Sled Dog Race 2012

A dog jumps before the mass start of the eighth stage of the La Grande Odyssee sled dogs race in Bessans January 16, 2012. The race crosses the Alps in France covering over 1000 km (621 miles) over 11 days. REUTERS/Denis Balibouse

La Grande Odyssee Sled Dog Race 2012

Mushers and their dogs compete after the mass start of the eighth stage of the La Grande Odyssee sled dogs race in Bessans January 16, 2012. The race crosses the Alps in France covering over 1000 km (621 miles) over 11 days. REUTERS/Denis Balibouse

La Grande Odyssee Sled Dog Race 2012

Mushers and dogs compete through the village of L'Ecot during the eighth stage of the La Grande Odyssee sled dog race January 16, 2012. The race crosses the Alps in France covering over 1000 km (621 miles) over 11 days. REUTERS/Denis Balibouse

La Grande Odyssee Sled Dog Race 2012

A musher and his dogs run through the village of Bonneval-sur-Arc during the eighth stage of the La Grande Odyssee sled dogs race January 16, 2012. The race crosses the Alps in France covering over 1000 km (621 miles) over 11 days. REUTERS/Denis Balibouse

La Grande Odyssee Sled Dog Race 2012

Swiss musher Marc Tercier competes with other mushers during the mass start of the eighth stage of the La Grande Odyssee sled dogs race in Bessans January 16, 2012. The race crosses the Alps in France covering over 1000 km (621 miles) over 11 days. REUTERS/Denis Balibouse

La Grande Odyssee Sled Dog Race 2012

A musher and his dogs compete on a track near the Mont-Cenis Path during the ninth stage of La Grande Odyssee sled dogs race January 17, 2012. The race crosses the Alps in France covering over 1000 km (621 miles) over 11 days. Picture taken with a long exposure ayndc a fisheye lens. REUTERS/Denis Balibouse

La Grande Odyssee Sled Dog Race 2012

Mushers prepare their dogs at the Polar Base in Mont-Cenis before the start of the second part of the ninth stage of the La Grande Odyssee sled dogs race January 18, 2012. The race crosses the Alps in France covering over 1000 km (621 miles) over 11 days. Picture taken with a long exposure. REUTERS/Denis Balibouse

La Grande Odyssee Sled Dog Race 2012

A musher and his dogs compete during the ninth stage of the La Grande Odyssee sled dogs race at the Polar Base in Mont-Cenis January 17, 2012. The race crosses the Alps in France covering over 1000 km (621 miles) over 11 days. Picture taken January 17, 2012. REUTERS/Denis Balibouse

La Grande Odyssee Sled Dog Race 2012

Miloslav Mikolasek of the Czech Republic checks his dogs before the start of the second part of the ninth stage of the La Grande Odyssee sled dogs race at the Polar Base in Mont-Cenis January 18, 2012. The race crosses the Alps in France covering over 1000 km (621 miles) over 11 days. REUTERS/Denis Balibouse

La Grande Odyssee Sled Dog Race 2012

Musher Radek Havrda of Czech Republic poses with his dogs after winning the La Grande Odyssee sled dog race in Lanslebourg January 18, 2012. The race crosses the Alps in France covering over 1000 km (621 miles) over 11 days. REUTERS/Denis Balibouse