Most often when I run I set out to run a new street, neighborhood, town, etc. I have this internal goal to paint as much of the planet with my feet as possible. I use a 910XT and can't wait to upload my data into GC (it's my version of going for the high score in a video game). I would love to be able to apply the mapped data from a single activity to a map to see where all I have been. Doesn't matter if it were running, cycling, walking, whatever. Just make each activity's trail a different color. Then a user could apply all activities at once and really see how much territory they have covered.
Unless I don't have the right engineering degree to find where Garmin already buried this feature into some other irrelevant product :confused: