My RunKeeper says it's connected with Garmin, as does my Garmin Connect. But, it doesn't upload my runs to RunKeeper. Well, it did one, but it took 24 hours for it to work.
A support person mentioned that only runs with GPS would sync. Is that true? I do a fair amount of treadmill runs in the winter and having to create those manually is a bit ridiculous.
I'm currently using Tapiriik but it's a bit slow and an extra step that I shouldn't have to do.