I can recommend Mapy. You can download maps per country, state and even region, so not overly much storage space used. Route planning and navigating offline - it even let's you plan tours based on kilometers and/or time (this is particularly nice when hiking in an unfamiliar region). Modes are: car, bike, mountain bike and foot. I've been using it for years now and like it a lot. It's free with some premium options, I believe. https://mapy.com/en/