There is a stretch going up to Jefferson Lake outside of Jefferson Colorado that is extreme. We took the Cree up it with out 75 E 100 with a 300 inline 6. Going up was one thing, coming down was another. The 2500 lb Cree had no brakes and the van had drums. Luckily it's a shorter drive.
Our first trip with this trailer we decided to take the short route between Horse Tooth and Red Feathers. It may have been shorter but the speeds were much slower. The paved was 2 lane with 30-50 mph curves. The dirt was a logging road that at times had the Expy down to 15 mph in first and had hairpins at 10-20 mph warnings. There was beautiful scenery coming into the area from the backside, we even saw a moose. On the way home we took the long way, it took much less time.