i know there is practice sundays, but i think they race mx saturdays, tt sundays
they dont really judge quad to dirt bike from what i have seen
its not very "technical" it has some big jumps and wide turns on the advanced track.
they also have some fun hill climbs, a tt track, a pee wee track and a drag strip
i like it
check out there website if you havnt already
www.sandmountainspeedway.com/