I frequently go on rides with groups that are set up by an organizer. He/she will basically say "meet up here, and we will ride to there", not giving exact details on the route. More or less, follow the leader. Many of the rides I would like to do again, but trying to remember turns, roads, bear-right here and there, my mind is not that good. So, I thought, there has to be a way for my Garmin to "record" where I have been and I can save it. The instructions didn't say anything about this feature I would love to have. Alas, I found this website, pretty cool info!!
Garmin Nuvi GPS Tricks, Tips, Work Arounds, Hints, Secrets and Ideas -- Page 6