I’m not sure if folks here have experience with the old John Carter boardgame by SPI in the 1980’s, but it has a nice map.
Here is a link to it:
It’s not a pretty map, but what I like about it is that they have marked all of the major cities and distances between them. That’s an awesome resource for folks trying to plan out travel times and such.
Just thought I’d share with anyone who isn’t familiar with this map.