The trip back to Chihuahua via Carichic and SF de Borja is a pleasant way to unwind the trip. It is about half paved and half fun dirt. From Creel to Carichic it's high mountains and great scenery, but is constantly being improved, so the character may change. There is not a lot of traffic but apparently enough to justify improvements. Mostly it is dirt or rocks with a few spots that get interesting in wet weather. In general it is waaay more fun than taking the paved road from Cuauhtemoc to San Juanito. From Carichic to SF de Borja the elevation is less, but most of the road is narrower and varies from running along streams in narrow valleys to open hills with large vistas. There are several dry vados filled with rocks which lead me to believe that there would be water there in the wet season. We think there is another way to make this part of the trip, but haven't explored it yet. The paved road from SF de Borja to Mex 16 is a quite nice curvy/hilly bit where big bikes could have a lot of fun at higher speeds.