This is a great resource for someone to get started preparing a trip but when you're ready for topo detail, I highly recommend: https://mappingsupport.com/p/gm

This is a great resource for someone to get started preparing a trip but when you're ready for topo detail, I highly recommend: https://mappingsupport.com/p/gmap4.php https://mappingsupport.com/p/gmap4.php It offers 8 different collections of topographical maps, some that include trails