in australia, i would have to say, anywhere in victoria.
can ride in lots of places, from desert to mountain, all within a couple of hours.
we can rec. register a dirt bike for 70 bucks a year, and you get full medical and income insurance, TAC, included in that,. - there are rules you have to follow about where you can ride, but baciaclly no freeways/main roads, not in town/cities....
but country roads are fine....
we have short summers when it gets dusty, but 8 month of the year its dirtbike heaven.
pretty bloody good.