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From Fellrnr.com, Running tips
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'''0.031 (165.2 Ft/Mile 31.3 m/Km)'''
| ''''''0.063 (330.5 Ft/Mile 62.6 m/Km) '''''')
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* The turnarounds are even less accurate than going under a bridge, but Power Lines do not seem to impact accuracy noticeably.
* The [[Footpod]] improves the accuracy of the 310XT and the 910XT, especially on the turn around and under the bridge.
* Without the Footpod, the 310XT has similar problems to the RC3 on the turn around, but the RC3 does quite a bit worse under the bridge.
=Recommendations=
* Adding a Footpod to the {{Garmin 310XT}} and the {{Garmin 910XT}} improves their accuracy.
* It takes time for the GPS watches to acquire the satellites. The watches tended to say they are ready to go before they have an optimal lock. Therefore, to improve accuracy try to give them a little more time. Note that some newer GPS watches such as the [http://www.amazon.com/Garmin-010-01128-30-Forerunner-620-Bundle/dp/B00FBYYC90 Garmin 620] have the ability to be preloaded with the satellite positions, reducing this startup time and start up in accuracy dramatically.
* The GPS watches are not accurate enough to perform any type of [[Practical Interval Training| interval training]]. Instead, use a track or measure out the distance using some other mechanism.
=Even GPS Watches have Bad Days=
