I'm with Joe. I phone ahead to the county seat of each county through which I'll pass, to the chamber of commerce or county welcome center, etc. I request a county road map and any other literature they's like to send for a bike tourer who will be passing through. Amazing what you receive.

How far apart are these two cities? Which/where are they?

Anyhow, I prefer paper. It works from sunrise to sundown without batteries.