Notes
At the Peachtree Ridge HS track doing 8 easy. Just not in the mood to go to Alpharetta Big Creek Greenway and waste an hour for the drive to and fro. Wore my 305 to compre with my 310xt. I forgot to turn on GPS on the 305 so I'm one lap short of my 8 mile run.
305: 7.84 miles 28 laps @ 453.66 meters per lap = 7.89297 miles
310xt: 7.78 miles
Hmmm. so it seems that the 305 was more accurate....
This needs another better test.