I downloaded an app for the iPhone called Trailguru. It basically uses the GPS facility of the phone to establish a trail on which you are walking. I tend to walk the same one of three routes each day, and up until now have only guessed at the distance. It is what appears to be a long walk around muddy fields, and I guessed about 1 and a half miles. Well Trailguru managed to tell me that it was 2.2 miles and I did it in 35 minutes...at an average speed of 3.4 mph!! How funny
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