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Recorded route incorrect.

My Garmin 830 is using the 9.75 coftware. It usually records the route ridden accurately. However, this morning it is so wrong it was like someone rather drunk just drew a line on the map. The distance recorded was correct and the speed was too. But the actual route I rode was WAY off. Why? And can I correct the route by replotting it?

0 PeterK_55 over 2 years ago

Are you using a speed sensor? That would explain correct speed and distance even if there is no GPS signal.

Is the route accurate in some places but not others? - Symptom of an intermittent GPS signal.

Did you inadvertently use an activity profile with an indoor ride type?

0 NECBike over 2 years ago in reply to PeterK_55

Yes, I use speed sensor. Someone I rode with had the correct route... My recorded route only had a short section that was correct. The route is incorrect on my Garmin and therefore also on Strava...

0 PeterK_55 over 2 years ago in reply to NECBike

OK. Perhaps make sure the GPS is ready before starting a ride. Acquiring signal can take a lot longer if the device is turned on in an area well away from where it is usually used.

0 NECBike over 2 years ago in reply to PeterK_55

Hmmm... Garmin was turned on where it usually is and the ride started about about 50m from that point. Very familiar route too...