If you are staying nearby, can you use the roads they use after or before hours? I saw a video where they turn off a paved road for the "desert run."
Is that available to be used without them?
As stated...other than the short morning portion at the Miller Motorsports Complex...the rest is all on public lands.
We did hear a funny story of a guy who drove his own brand new vehicle to the class. After the class (and perhaps a stop at the bar) he went back to the "desert run" location where he promptly rolled his truck. Haha!
Seriously though, there is a lot of great terrain all around the course location...and being able to run it at your own speed (translation: faster) is definitely worth exploring.