As an avid hiker I've been using https://www.alltrails.com https://www.alltrails.com app which lets me download just a segment of a map that a trail is on and i

As an avid hiker I've been using https://www.alltrails.com https://www.alltrails.com app which lets me download just a segment of a map that a trail is on and is detailed enough for me to follow.