http://exercise.lbl.gov/index.html" onclick="window.open(this.href);return false;
here's a website. I'm new to it so i'm not real familiar with how it works but understanding is that you can do any of these activites, bike, run, walk, run/walk and you log your mileage each time as you walk across america while you do it. They show pics and stuff as you go along. if anyone is interested in doing it!
walk across america
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