GPS works by connecting your device to a number of overhead satellites and precisely measuring the time it takes for a signal to travel between your device and the satellites. Ignoring (for now) environmental factors, different devices have different qualities of GPS hardware and software - meaning that even if your device is working at its peak performance, there will always be a margin of error in the accuracy of its recording. Many factors contribute to the accuracy of your GPS data - and it's important to keep in mind that no data is perfect in fact, there is some error inherent in any GPS recording. See the examples discussed in this article. Your device may have recorded GPS points that deviate from your true path.Your Strava activity may be missing a map, show a straight line connecting your start and endpoints, or was automatically tagged as an indoor activity. Your device may have simply lost a connection to GPS satellites and did not record any data.Bad GPS data can result in your activities on Strava having missing or extra distance recorded segments not matched at allor recorded inaccurately inaccurate elevation data inaccurate achievements such as estimated best efforts and more. We use the term "bad GPS data" to describe any circumstance where your GPS device records location (or other) data that does not accurately represent your activity. Have trouble with inaccurate GPS data while recording your activities? See the information below to learn more about what bad GPS data is, why it happens, and how to prevent it.
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