Of course.
As an afterthought... even if a route could be copyrighted, we're only talking about the visuals aren't we? After all, his maps tend to be hand drawn illustrations. So if I didn't display the map but instead simply offered a gps file for download - can that be comparible? A gpx file is, after all, simply a list of coordinates. It's something that many people use these days, and something that - so far as I know - he doesn't offer.