I've ridden the CO, NM and UT BDRs. I've not been able to any of them "exactly" as planned. Always something...snow, hail, downed trees, big snake...something. Yet, the absolute best memories of each ride are when we had creatively find a workaround and roll our own. Some were minor-ish workarounds that were a few hours at most. Some were major sub-adventures pushing bikes past their limits and involving some TIG welding to keep going. ALL great memories. I look at the BDR as a blueprint - with some freedom to create as needed. I'll plan on following the plan, but be just as happy when I have to (or want to) improvise.