I have never seen anything like this: so many trails! And I thought i had ridden congested riding areas before, being from the midwest. Some good trails, though.
Nothing's marked, there are just random trails going every which way.
Going north on 93 from Whitefish, hang a left on Twin Bridges road, hang a left on lodge pole road, and then hang a left on farm to market road. About a mile from that intersection there is a turnout on the right.
http://www.singletracks.com/item.php?c=1&i=2768