I did a bike ride mostly on bike trails (not roads) around Redmond, Washington (East of Seattle). I want to make a route from the tracks, but when I do I get a bunch of crazy lines from places well off of the trail to the waypoints. Looking at some other posted questions and answers I think the problem may be that it's trying to make a route based on roads, and I was not on roads. Do I need to download some map that has bike trails, and, if so, where do I get it and how to install?
Macbook Pro
Garmin Edge 530
Basecamp 4.8.12