I've been using TCX files on my Garmin 800 for a year without problem. there are some peculiar defaults that need to be overwritten, but these are documented elsewhere. The one thing I can't do is create a custom cue sheet entry and get the 800 to recognize it. For example, if I'm doing an unfamiliar climb I might enter a "Summit" cue sheet entry, the the time/distance to next "turn" doesn't reflect the Summit, only the next turn. I'd like a pop-up map with a count-down timer similar to what appears prior to a turn. Is there any workaround for this or am I doing something wrong? Or should I be using GPX Track?
Getting additional cue sheet entries to be treated a a navigation event