Get up Mt. Evans early one morning.

Wait until the afternoon and the clouds roll in with possible rain.
Look for all the roads with passes.
Loveland Pass from Dillon on Hwy 6 heading east towards Denver. A good road to ride on the way to Mt. Evans.
Your warning re. Mt. Evans brings back some memories. I was stationed at Lowery AFB in 1957 and a bunch of us decided to take a run up Mt. Evans after lunch on a Saturday. Sure enough, the clouds rolled in along with some drizzle just as we started back down. Fortunately we had some high powered flashlights and a couple of us walked in front of the car as we crept down the mountain. Suddenly in front of us loomed this huge animal and we beelined it for the car. We slowly edged forward and it turned out to be an old milk cow, apparently disoriented from the thick fog/cloud surrounding us. We nudged it a bit and it started down the road, veeerrrryyy slowly. I finally got out and walked in front of it, then it stayed right at my side and every time I'd pause it would nudge me with it's nose. We got stuck following that fool thing for the rest of the way down. When we got down to where it was clear enough to see, I led it over to an overlook in hopes it would stay out of the way. It was then I noticed it was leaking milk like a faucet, apparently hadn't been milked for at least 24 hours, something that can be painful for old Betsy. So, beings I was born and raised in the Land of The Sod Savages(Iowa), I thought a little relief was in order. She was a little touchy at first but apparently realized what I was doing, so she stood there while I milked her, letting it simply run onto the ground. I won't go into some of the nicknames I received, all a gift from the clowns in the car. Even the squadron commander joked about it at the next commander's call. As for old Betsy, when we left her, she was laying down chewing her cud contently.