Take an existing park/ site/ property / walking trail / hiking trail, and slap some baskets and a few tees (concrete optional in a ~3’x5’ square for the ‘tee’, but a marked off piece of dirt is also acceptable)
Course is in a forest? Better dodge the trees! The course near me encircles soccer fields and a walking path, another one near me follows along a creek.
There are courses that go under power lines and some that are nested away in between buildings.