gmaps pedometer

David and I have been taking long walks a couple of evenings a week with Sam. We usually head into one neighborhood where there are beautiful houses and yards. The past two times we went for a walk I sat down at the computer when we got back and mapped out where we had gone on gmap-pedometer. Last night after I did this I was shocked to see that it said we had walked almost 5.5 miles. I didn't think we were gone that long--but- wow! that's a long walk!