That looks good. THere is bad traffic between Durango and Bayfield - I think there is a better alternate way to get from Durango to Pagosa Springs - ask in the Durango bike shops. Also, if you are near Salida when you need to stop for a night, Salida is a really cool little town, if you go into town, but seems fairly lame if you stay on the outskirts. So, go to town. Why are you going to Marble?