This. I have come to terms with the fact that I will never own my own paved racetrack in any capacity.
BUT, I have also learned that dirt is almost as fun. You may not be able to pull the same amount of G, but sliding around is a ton of fun too.
Just buy a bobcat, some stumpgrinders, tons of chainsaws, and build your own rally track out in the middle of the woods. Hell, build a group B car to rip it up on.
To add to this, I learned that dirt is fun on my uncle's farm. He has a nice, like 10 + acre field that he doesnt care about, that I take cars out on and rip it up. I started out mowing out a track pattern on the perimeter of the field, and then started turfing it up with cars. Eventually it became pretty defined. Its mostly a squared off oval, but I have some gentle right hand curves thrown in. Id say its probably a little less than an 1/8th mile long.
You'd have to grade out the road to make it decently smooth with either a bulldozer or motorgrader. Don't forget to compact all of your fill dirt!
Then you have to put down a layer of stone so the pavement can properly set, don't forget to compact the stone!
Then you're finally ready for asphalt. Goodluck OP, you're gonna need an assload of money even to do this yourself.