Weird GPS-bug: going backwards
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Yesterday I had this weird bug on my Vertical 2. I was doing a 16 km run. And everything was fine. I had installed a route with no overlapping points. On the run I decided to make an extra lap in the forest. The consequence was that I had to ran the first km again. That’s never a problem.
On my watch I saw a few times that I ran – min/km. So I was scared there was some GPS-connection loss. I also saw the km was a bit too high. I know that last km, but it measured 1,5 km. Something was off.
It’s a very weird bug. According to the GPX it looses connection. After 150 m it gets connection again but it measures me going backwards. That’s really odd to me. I don’t know when GPS could measure you going backwards. It’s hard to show since I tracked back part of my run, so there are overlapping lines. Only the one on the end didn’t have overlap, so I have attached screenshots. On strava I could show the direction and on Suunto I could zoom in better. Keep in mind that the Suunto-screenshot is a bit tilted. It happened 7 times. It stopped because I was home.
Question: Has someone encountered the same problem? Could it be triggered by going backward on a route? Because the problem started immediately when I got back on route. Maybe my watch thought I would go in the opposite direction.
I do not hope it’ll happen again. It’s quite a severe bug. This time it didn’t affect me much, but another time it might be different. It’s the first time in 27 activities and I haven’t done an activity since. I already did do a soft reset yesterday



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Hello,
I had the same issue once when I went running with my wife. I selected a “route,” and she accidentally selected “follow route.” At a point where we were running against the current direction, her watch started counting down. Later, I had the same issue, and it became a mess when I deviated from the route. So you have to be sure you select the correct mode, otherwise it won’t work properly. -
@Jacobus I have encountered the issue the navigation needs some time to understand you’re going back! That’s an issue I can ignore. I think it is weird if the GPS is wrong. That should be a process indepenent of the route.
When did you have this issue and with what watch?