Oh and Bears love Reefer. It's Madness I'd recommend Hanging your stash in a tube sock in a tree away from your camp site. Snuff your joints out in water otherwise you'll make another bear very angry.
I think that is the road from boulder to black hawk which will take you to 70 in idaho springs. You go through the nederlands. It's good ride. They're is a gravel road that will take you to out to an old rail road bridge and some moto adventure trails if you adventure ride at all.