Denver may be high on the list but it's a low bar.  Our lanes disappear at every intersection, our network is disjointed, and our protected facilities constantly have cars in them, belying their protected status.

Denver doesn't build street lanes worthy of respect by cyclists and drivers, it builds politically feasible lanes and that shows in their use by the number of users (fewer than there could be) and the number who abide by the law (again, fewer than could be).