yes there is some.
there is national park in the hills above the drag with a few fire road routes waymarked.
its hot but gets you away from all the tat plus its pretty cool pedaling past tortoises etc.
Watch out for the bees at that time of year as i think they have started to move them down from the hills for the winter by then.
you may want to pedal round to the neilson resort on adakoy island and seek out the mtb guy to see what he knows.
enjoy