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Originally Posted by metallicat
Yeah I've read so many reviews and watched so many videos in the past couple of days. Still torn. Now you want me to consider other Garmin devices??!! My main concern is GPS distance accuracy. It has to do that perfectly or as close to perfect as possible.
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I use a Garmin 235 that I’ve liked a lot. This is a pretty commonly used watch for runners. Pretty accurate I find and the wrist heart rate monitor hasn’t surprised me with anything weird.
However, a GPS is never going to be 100% accurate, no matter how much money you throw at it. Two people running together might have their distances measured differently by two different devices. Or you might run a route two different days and have slightly different readings - something about satellites shifting.
An official official race course measurement is typically done with a calibrated bike. The bike has a device that not only measures distance but also air pressure changes as it goes up and down hills as an example.
I think a certified half marathon course would be accurate within 20 feet over a 21.1 KM distance. That’s just not going to happen with a GPS device.
But you do want something more accurate and consistent than the one you’re dumping.