I don't know the answer to this one, I hope someone else does.
I have a GPS with topo 24 and Birdseye. I can see some trails, but not a lot.
I read on another site that Garmin struggles with the concept so of trails, what defines a trail and so on.
I could certainly make trails on my GPS by going a riding the trail, but there must be a better way; especially if I have never been there.
The forest service has static maps which are a good reference, but they are not indexed for position for GPS use.
Perhaps there is some kind of collective groups that does this type of thing.
Any ideas?