I think I've done this right. Relations are still a little confusing.
I used this tag: rcn=proposed and wrote in "proposed" as the route I took my bicycle from Huntsville, Alabama to Fayetteville, TN is not an official regional route, so no number to log. But from Hazel Green, AL on to Fayetteville, TN it's a fantastic bicycle route, so I logged in the route I figured out from OSM before I left. I had some GPS tracks, but my battery was mostly dying on my droid phone for me to keep it on for too long. I now have an extra battery to help with long bicycling trips now.
Discussion
Comment from Baloo Uriza on 12 August 2010 at 06:35
Use relations for routes; these have proposed tags available.