I have both the Timex and Garmin and ran a 10K on the track
to check the calibration wearing both at the same time. Both
read high. I can't recall the exact numbers but the Timex
was about 99.5% accurate and the Garmin was way off, I seem
to remember about 95%. The Garmin could not handle the oval
very well. All of my running loops that I have show about
.05 to .1 longer using the Garmin vs the Timex. I have used
the Timex in several certified marathons and it read about
.1 to .15 over at the end which is pretty good over 26.2
miles. Have not used the Garmin in a marathon yet. My
experice is that the Timex is quite accurate and I am
certain that my Garmin is consistantly optimistic in
mileage. Also the measurement varies more over the same loop
where as the Timex measures virtually identical each time.
I'm not sure if accuracy would vary from unit to unit and
other people would have better or worse accuracy.
"warp" <
[email protected]> wrote in message
news:<
[email protected]>...
> I've been researching the Timex Bodylink and Forerunner
> GPS systems, and I am wondering if they correctly register
> distance traveled while running laps on a 1/4 mile track.
> Seems like they might possibly be confused by the
> relatively short circle... does anyone have any
> information on this?