These days, you can't swing a dead cat without hitting another nifty web site based on the Google Maps API. I've been overwhelmed with them lately. But Gmaps Pedometer actually helped me solve a real question I had: how long a walk was it the other day to my car mechanic? (1.75 miles) Or an historical one: how far did I walk in the third grade when I decided to walk home from school rather than simply ask a teacher for a token to get on the subway? 5.26 miles.