Man jogging in front of Sydney harbour, Sydney, New South Wales, Australia, Pacific

Horseracing in Bahrain.

Soft focus horseracing action at Epsom Races in Surrey, United Kingdom on the famous Derby Day

Karstadt marathon, Ruhr marathon, starting in two cities, Oberhausen and Dortmund, finishing in Essen, here 5km away from the finish line, runners in front of UNESCO World Cultural Heritage site Zeche Zollverein, Essen, North Rhine-Westphalia, Germany, Eu

Young woman drinking after a run

Marathon

Front view woman tying her shoelaces before exercising

Skyline in front of Coral Harbour, at dusk, and the statue 'the runner', Vancouver, British Columbia, Canada, North America

Skyline in front of Coral Harbour, at dusk, and the statue 'the runner', Vancouver, British Columbia, Canada, North America

Topher Gaylord trail running on Mont Ventoux, France.

Presidential candidate Barack Obama smiles while greeting members of the crowd following the largest political rally of the Democratic front runner's campaign to date at Waterfront Park in Portland, Oregon on May 18, 2008. City of Portland officials estimated the crowd at 72,000 people. It was the largest political rally in Oregon history.

Presidential candidate and Democratic front runner, Barack Obama, speaks in front of huge crowd of people at a record breaking political rally in Waterfront Park, Portland, Oregon on May 18, 2008. The City of Portland Fire Department estimated crowd attendance at 72,000. It was the largest campaign rally to date for the candidate and the largest political rally in Oregon history.

Presidential candidate and Democratic front runner, Barack Obama, speaks in front of huge crowd of people at a record breaking political rally in Waterfront Park, Portland, Oregon on May 18, 2008. The City of Portland Fire Department estimated crowd attendance at 72,000. It was the largest campaign rally to date for the candidate and the largest political rally in Oregon history.

Presidential candidate and Democratic front runner, Barack Obama, speaks in front of huge crowd of people at a record breaking political rally in Waterfront Park, Portland, Oregon on May 18, 2008. The City of Portland Fire Department estimated crowd attendance at 72,000. It was the largest campaign rally to date for the candidate and the largest political rally in Oregon history.

Topher Gaylord trail running in the Lautaret, France.

Presidential candidate and Democratic front runner, Barack Obama, speaks in front of huge crowd of people at a record breaking political rally in Waterfront Park, Portland, Oregon on May 18, 2008. The City of Portland Fire Department estimated crowd attendance at 72,000. It was the largest campaign rally to date for the candidate and the largest political rally in Oregon history.

Andi Bither desert running in the far away landscape of Moab, Utah.

Kady Bodenhemier road running in Moab, Utah.