Dumb question, I know....I usually use Routes for navigation by developing the route on my Mac in Basecamp Topo 24k, then sending it to my 650t (also equipped with Topo 24k). I use Tracks out in the field to keep track of where I've been so I can later transfer to the Mac and share the experience or keep as a record of my wanderings. I just now discovered that I can create Tracks in Basecamp on the Mac, instead of Routes? What's the purpose of this? They seem like the same thing...kinda.