Alter Nereus Posted May 6, 2008 Share Posted May 6, 2008 OK, this has been bugging me for a while now and although not a life or death problem it would be nice to hear some views/explanations. If I plan a route on my home laptop using Map Source(?) in combination with TOPO Germany it will show me say a distance of 20km. This has been marked out using the pen tool over nothing other than forest tracks. I realise that I'm setting lots of points as opposed to using waypoints at junctions etc but I prefer this option as (a) others can see the planned route on the unit plus I know exactly (or should) the total distance of the route I have penned out and transferred to the unit - Garmin Map60CSx. Now, when I follow that route the unit records a track on top of my route making it easy for me to follow. Upon return home however, and downloading the track to the laptop it shows me a different distance covered - say 21.5 km. Not a huge difference I know but more of a difference than can be explained if I was zigzagging across a motorway for instance which is why I mentioned forest tracks earlier on. So which do I believe the distance planned at home using the application or the track distance recorded by the unit and why the discrepancy. A couple of hundred metres wouldn't cause me to post this question, but 1.5 km although not a marathon is nothing to sneeze at. Would appreciate any views on the matter - thanks. Quote Link to comment
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