>>253349938 months. Australia. Many iterations. Walked a lot of states. Slept a lot of beaches, bummed a lot of rides. Made more money have having no rent while stopping for a couple of weeks doing picker trails.
Had sleeping bag, pad, hygrine gear, a good knife and passable working clothes that doubled as interview. Sandles for average wear, some non descrept shoes for work and stable standing. Most of the time I'd wind up bored and drifting to the nearest town then to the library. Food was so cheap in general from not eating out at all that foraging was all suppliment. Seasonal and mostly required local knowladge so stayed away from a lot of it. Too much of the difficulty now is in the gaps between areas that people live. The thing is it's easy to settle down, use employment to get basic materials and make a small hide. It's as simple as an A frame and a good water container for long term. But frankly people are so generous on the road that I never had much actual adversity that I didn't go out of my way to find. Especially when it came to bad weather, mostly heat related, I'd go read a lot. Eat some cheap end of day meals. Go to work the next day, showering at places that let me, rest stops in two cases and beachside in most of the urban zones. In the end keeping clothes clean wasn't even that hard as eventaully you hit civ and can launder. Working while wandering is key. Expenses eliminated you are reduced to
1 Make self clean and presentable
2 Sleep and wake up safely
3 Get money
4 Use spare time
5 Resist temptations to spend on stupid shit because no bills no thrills.
It's a great way to skill up if you have a nearby hobby. The money I saved from those 38 months became seed money fo later land ownership. As for wilderness, you need starup capital and specific gear in a place that no one checks much. Loads of that here and in the USA but euros are fucked.
Check Forest Anon for a more static equivilent of what I did. All you need is sleep and eat safely.