We are planning on doing the same thing and I have both maps sitting here in front of me. How many days are you giving yourself to do both? I was really looking forward to starting in UT, but it looks like most people in my group want to start with CO to make sure we do all of it, so tentatively looking at parking the vehicles in Durango, CO and head into Delores where we'll pick up the COBDR heading north. We'll be skipping the 4 corners as we have seen that before. We'll follow the entire COBDR north as layed out, but not sure where to pick up UT? I think we'll have 13 days max of riding so probably not heading all the way to the very northern part of UT next to Wyoming. Probably try to pick it up just north of Duchesne? We'll ride the UTBDR south from there, maybe to Monticello or Blanding before heading back East over to CO. Planning on skipping that part that goes over the Moki Dugway and down to Mexican Hat as I've done that twice already. From there back to Durango. We'll all be on small bikes so trying to keep pavement a minimum between getting from CO to UT and back.