Colorado used to have some of the best motorcycle roads anywhere. Routes like the 'Million Dollar Highway' were on top ten lists for riders. But that's been changing. For one thing, traffic is far worse, especially on roads to the mountains from the Denver or Colorado Springs areas. Riding eastbound I-70 out of the mountains on a Sunday afternoon can land you in hours of stop and go traffic. I know a woman who went skiing on a holiday weekend last winter and spent 13 hours driving home. It normally takes three.
There are times (usually weekdays) when the traffic is much lighter, but the riding still isn't great because Colorado's roads are literally crumbling. I sometimes ride to a racetrack in eastern Colorado to watch MRA motorcycle racing. But for the last two years the pavement on US-36 has become so rough that the bike takes a terrible pounding. Potholes are everywhere, and the state (CDOT) rarely even fills them anymore.
Some people blame it on Colorado's weather, but adjacent states with similar climate like Utah and Wyoming have far better pavement. Then last week I saw this article confirming the obvious: Colorado highways are nearly the worst in the nation, with only 2 states having interstates in poorer condition. Secondary highways are even worse, with pavement so old that shoulders are disappearing and so many potholes in some places that center stripes become invisible. And it's all by design, to reduce driving, and CO2 emissions. The governor's appointees to the transportation actually brag about the plan.
If you're planning a trip to Colorado you might want to read the article:
https://pagetwo.completecolorado.com/2024/10/11/hillman-colorado-highways-crumble-under-cdot-neglect/