Twain wrote:
I've pondered that route before. How are the mountain grades on 160?
Wolf Creek Pass east of Pagosa Springs is a fairly long steep climb. But there are two lanes going up so you can stay in the right lane and take your time without worrying about holding up traffic. And several scenic pullouts along the way if you need to pull over. US 160 is essentially a pipeline for RVs of all types and sizes across southern CO.
North La Veta Pass between Ft Garland and Walsenburg is not nearly as steep and long. And Raton Pass even less so. But if you would rather not do the passes you could turn south at Pagosa as noted above and head down thru Santa Fe and on down to I-40.