Originally Posted by
Danno
Don't camp at James M Robb unless it's your only option. It is right by the river but also right by I-70. I have heard Highline is nice, not been there. Rabbit Valley out by the state line has a handful of sweet primitive sites, but it's a bit of a drive to trails (other than the trails out there, which isn't much except Western Rim) and a bit of a drive to the sites themselves (which kind of sucks if they're all taken). I can dig up the info if you're having trouble finding it.
A big consideration is when you're going. Weekdays, no sweat. Weekends in Sep/Oct, totally different story.