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This is kind of what I am trying to do but I don't know how to do it. I have Garmin Topos and 3rd party, "home made" topos.  I also have track logs in GDB and GPX formats of many of the trails that I backpack.  What I would like to do is convert the track logs to trails and put them on the topos that are loaded in my Garmin GPS Map 60 CSX.  I don't want to load the track logs themselves because in many cases they use up most of the available track log samples that the Garmin will hold. 

Help!

Gene