If you're planning a trip to the nature, please stop using Google Maps. Their outdoor maps are lacking at best and actively deceiving in cases where it might play a role. Navigation in high stakes areas can get dangerous really quickly.
What's the alternative? For basic use I always recommend mapy.cz (Yay, Czech product). It takes the map sources from the Open Street Maps project and does _by far_ the best job in rendering them to be understandable.
Offline maps, navigation, POIs, winter maps, earial maps, route planning, elevation profile, modes of transport, ...
https://play.google.com/store/apps/details?id=cz.seznam.mapy