+1 for the Trails Illustrated maps. They have an incredible amount of detail! As best I can tell, if you go to https://gaiagps.com and create an account, you can look at the map for free, with Trails Illustrated being one of the layers you can select. It's also available in the app.We have had great luck with the series of topo maps available from National Geographic and is always $10 well spent. https://shop.nationalgeographic.com/category/maps/trail-maps