GPS Accuracy

Former Member over 5 years ago

I am wondering the F6 performance dips when the battery is low. I have a 14 hours left and did a run. The GPS route is terrible. It has been through ponds and shrinks the run down massively. The black line is the route. I have the google gps map too and it's no better.

Is the overall distance based on the gps data as my 4 laps are quite a bit shorter than the reality. Is anyone else having gps issues?

I really felt the F6 was the ultimate outdoor watch but I am a disappointed at the minute, especially given the investment.

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0 RISBAC over 5 years ago

Second ride with the 6x today, with half of it inside Paris. A very impressive one. It's really surprisingly clean, given how difficult it is to have a clean track in Paris, with tall building around me most of the time. I never had such a clean track on the 5X, and I don't think I had anything similar like that in my Ambit 3...

0 beta-L-user over 5 years ago in reply to eezytiger

I use the same combination of devices (V800, fenix 5x and fenix 6x Pro Sapphire).

Comparing the tracks they do not differ that much, but Garmin is not able to program correctly. The displayed distance on the device is different from the distance you get calculating out of the recorded track. The 1km-lap very often is shown later (means you ran more). Unfortunately this means that the performance displayed is incorrect. My yesterday's run had again severe deviations between the "real" 1km (calculating out of the track which is very close to the data from the track recorded from the V800) and the 1km out of 1km-laps shown while running (as also shown in the csv-file you can download).

I deleted the data which is at the end of the run (fenix 6x pro ended up with 14,81 km, the track data result is 15,20)

recording lat/lon-values with accuracy of "xx.1028657816350460052490234375" (copied out of the gpx-file and removing of the digits at the beginning)is absolutely useless. calculating the distance is very simple and I think that Eratosthenes (200 bc) would have done it better than Garmin.

data was recorded in 1s-intervals, GPS+Galileo.

0 RISBAC over 5 years ago in reply to beta-L-user

Yes, very typical from Garmin. They "adjust" the distance, based on I don't know what (accelerometer data maybe, plus some black magic...). I often fix it by telling Strava to recalculate the distance. Then they take the GPS data, and it seems quite fine with the 6X which is very ok for GPS precision. For the 5X, it was often giving too much distance due to the GPS performances. But they should really get rid of their black magic here, or at least really tame it.

0 RISBAC over 5 years ago

0 Former Member over 5 years ago

I have a question? If I use a course on my city-run , what distance will the Fenix report- from the map and GPS, or again from the watch only .

0 RISBAC over 5 years ago in reply to Former Member

The distance shown on your workout will be the "Garmin-black-magic-distance". Calculated from the watch data. On Strava, you can ask to replace it with the GPS data. On Garmin Connect, I don't think you can ask for this recalculation.

0 Former Member over 5 years ago in reply to benvlab

Can anyone please explain to me how it is possible to get such average results based on pace readings shown at graph ?

0 Former Member over 5 years ago in reply to RISBAC

What to replace ??? The course is done with a GC and it calculates the distance. Are you saying that watch will measure it differently?

0 Former Member over 5 years ago

Is there any experience with a Garmin footpod ant+? If the courses is useless, does it make sense to buy footpod for a distance and real pace?

0 JacekZet over 5 years ago in reply to Former Member

Stryd is a great option but it is quite expensive.