PHOTOS: San Francisco man will attempt World Marathon Challenge

SAN FRANCISCO (KGO) -- San Franciscans are known for doing things outside of the box. Well this sports story is a great example -- 31-year-old Tim Durbin is joining 12 others, attempting to run seven marathons in seven days on seven continents in the World Marathon Challenge.

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If you would like to follow Tim Durbin on his journey or make a charitable donation for his cause, click here for more information.