It started last Saturday and ends in Sydney, Australia on Friday. So far, the 31-year-old has run six marathons, each 26.2 miles. He's run through snow, rain and jetlag in Antarctica, Chile, Miami, Madrid, Morocco and Dubai.
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ABC7 Sports anchor Mike Shumann caught up with Durbin last week and he says he has his reasons for doing this.
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Durbin is averaging about five hours for each marathon and, he's doing it all for a good cause -- raising money for the V Foundation for cancer research.