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Routing: GPSMAP 66sr vs GPSMAP 65s [Bug 67]

Posted: Mon Jul 04, 2022 9:25 am
by ewald.gruen
What could be the reason that the 66sr (v5.50) provides much worse route suggestions than the 65s (v4.50) despite using the exact same OSM map? When I select "Hiking", I am guided along county roads instead of forest paths.

examples
65s_routing.png
66sr_routing-1.png
66sr_routing-2.png

[Gr] edited to add firmware versions

Re: Routing: GPSMAP 66sr vs GPSMAP 65s [Bug 67]

Posted: Mon Jul 04, 2022 1:51 pm
by GPSrChive
You have routing method set to 'Based on Activity' for each, so we would need to check first which activity was used on each device and what the individual settings are for each of those activities.

Re: Routing: GPSMAP 66sr vs GPSMAP 65s [Bug 67]

Posted: Mon Jul 04, 2022 2:22 pm
by ewald.gruen
The 'Activity' was set to 'Hiking' on both devices. I don't know how to check the 'individual settings', but I most likely use the defaults, because I never changed anything in that regards. The profiles are set as following:
  • 66sr: "Current profile is Hike"
  • 65s: "Current profile is Recreational"

Re: Routing: GPSMAP 66sr vs GPSMAP 65s [Bug 67]

Posted: Mon Jul 04, 2022 2:42 pm
by GPSrChive
To check unique settings for each 'Routing Activity', you must first select the activity in 'Setup > Routing > Activity' (instead of 'Prompted'). Then configure routing avoidances etc. as desired, and return selection to 'Prompted' again when finished.

Now, when you are 'Prompted' to choose a routing activity, the saved configuration for the selected option will be loaded and used to determine your route along with the enabled maps, etc.

These configurations are 'Profile' dependent, so if you make changes while in the 'Hiking' profile, then switch to another profile, they will not apply.

Re: Routing: GPSMAP 66sr vs GPSMAP 65s [Bug 67]

Posted: Mon Jul 04, 2022 4:57 pm
by ewald.gruen
Thanks! They were indeed set differently, but the sad news is that correcting the setting does not solve the problem. The 66sr selects the same county road for both "Minimize Time" and "Minimize Distance" and the 65s selects the same forest path for both "Minimize Time" and "Minimize Distance". I am at a loss.

Re: Routing: GPSMAP 66sr vs GPSMAP 65s [Bug 67]

Posted: Mon Jul 04, 2022 7:37 pm
by GPSrChive
We will again request you share screen captures from each device that clearly demonstrate this behavior, and then we will make certain the correct people at Garmin see them.

Re: Routing: GPSMAP 66sr vs GPSMAP 65s [Bug 67]

Posted: Tue Jul 05, 2022 10:40 am
by ewald.gruen
One out of many possible examples
link
  • Device: GPSMAP 66sr
  • Activity: Hiking
  • Calculation Method: Minimize Distance
maps
66sr_topo_vs_topoactive_vs_otm_vs_freizeitkarte.png
(Maps from left to right: TOPO Germany, TopoActive Europe,
links
It is possible to force the route to the correct path by adding a via point
link
map
66sr_freizeitkarte_via_point.png
(Map: Freizeitkarte)
No issue on neither the 65s nor the 64s:
  • Device: GPSMAP 65s
  • Activity: Hiking
  • Calculation Method: Minimize Distance
map
65s_freizeitkarte.png
(Map: Freizeitkarte)

Re: Routing: GPSMAP 66sr vs GPSMAP 65s [Bug 67]

Posted: Thu Jul 07, 2022 1:43 am
by GPSrChive
After doing some testing with a GPSMAP 64s, 65s, 66sr, and Montana 7x0, we have determined more information is still needed.

Please provide waypoint coordinates for the exact position those routes were all started from, and if you can also upload a screen capture of the Freizeitkarte map zoomed in on that location and in high detail, that would be great....

Thank You!

Re: Routing: GPSMAP 66sr vs GPSMAP 65s [Bug 67]

Posted: Thu Jul 07, 2022 7:27 am
by ewald.gruen
Start
End
maps
66sr_freizeitkarte_route-1.png
66sr_freizeitkarte_route-2.png
66sr_freizeitkarte_route-3.png
66sr_freizeitkarte_route-4.png

Re: Routing: GPSMAP 66sr vs GPSMAP 65s [Bug 67]

Posted: Mon Nov 10, 2025 1:15 pm
by Wojtas81
Tested it with Freizeitkarte map on Oregon 700 (v6.00) and the routing is the same, ie. incorrect (county roads).
But when I select Cycling profile and under menu Avoidances, Unpaved Roads are disabled, everything works as expected (ie. shortest route is really shortest via forest paths).
So using Cycling profiles instead of Hiking could be used as workaround.

Of course, everything works as expected with original Garmin TopoActive Maps (including Hiking profile). Only third-party maps have this issue.

Anyway, this bug is not specific to 66sr. Rather 64 and 65 have better routing with third-party maps than many other devices.