running watch

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For runners: any way to calibrate an inaccurate Garmin 305?

Idlewild @Idlewild (6090) • United States 25 Aug 11

I have a Garmin 305 running watch that has gotten pretty inaccurate over the last number of months. At first it seemed to show my pace/mileage accurately, then it got wonky, showing me as running much faster than I actually was....

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