So aim for URAVAN. The shelf road up to the top of the mesa there puts you right on the Rimrocker. The only issue you may have is La Sal Pass. Even when clear of snow it's a really rough ride. You may need to take a look at alternate routes off the road network west of Buckeye Res. John Brown is open and not too tough. All in All it's a great riding area and a perfect way to get to Moab. Have Fun!