[ronin_01r1]

I use Garmin's mapsource. Basically set the map to 3mi view and pick the curviest looking roads and string them together. I found if the view is less than 3mi view, it picks up a lot of the small local roads (gravel, unpaved, dirt, goat paths, etc). Usually for a full day's ride (8am-7pm) including breakfast and lunch and breaks about every hour, about 275 mile route is good.