arsprod, thanks for the update. I do have other offline mapping programs on my phone in the event I get so far off route that I need to change my route or need help getting back to my route. I've experimented with both OsmAnd and Navigator and have a slight preference toward Navigator but don't particularly like either one (it can get me to a road or intersection but not always to an address). But they both work reasonably well for bicycle directions. I have Sygic that I just started using in my car that seems to work reasonably well... except that it doesn't have bicycle directions as far as I can determine.

The purpose of RideWithGPS (for me) is to help me plan to my chosen route. Fortunately it beeps soon enough when I get off-route that I can stop and see where I went wrong.

I heard that with a Garmin if you let it re-calculate it may take you considerably off route if you make a wrong turn (mean it won't give you directions to get back on route automatically) So it functions similar to RideWithGPS when you upload a GPX file to the Garmin.