I used to use RouteSlip but was frustrated by some of its issues. Still a great product/service for free, but on long routes it took a long time to map out (point to point). I recently picked up MapSource Metro Guide (a Garmin product) - what a nice tool. Click on one point on the road & do the same to the next intersection & the software snaps to the road. Very quick way of mapping out. Just got it - now I need to upload what I did to my Edge 305....