Notes
55F 59%H 41DP, at the Alpharetta Big Creek Greenway. Did an extra 2 because of shortening yesterday's run by 2 miles. Wore both Garmins, the 310xt and the 910xt. Think I'll use the 310xt from now on. I think the GPS receiver is just not as sensitive in the 910xt. It registers a shorter distance when in any tree cover. The difference was 0.15 miles over an 8.4 mile distance which is an error rate of 0.01785 or < 2%, namely 1.8%