Most touring bikers use paper maps. A friend of mine swears by the Adventure Cycling maps...all paper of course, he just folds the section he wants and places it into a clear map holder on his handlebar bag and tallies on. Of course those Adventure Cycling maps do cost money but not as nearly as much as a GPS and no need to worry about dead batteries or loss of memory-except your own but you can't prevent that. And GPS maps are not specifically for cyclists as the Adventure series are. But you can get very good maps for free either at state facilities or AAA if your a member.