One thing I discovered is that many of the roads marked on the map as Secondary are actually better paved than parts of the Primary road.
The
descents on GC-14 and 42 are pretty crazy – enough switchbacks to make you
dizzy.
Evidently
the Secondary roads have been paved more recently than some old sections of
Primary roads, which have either a rough asphalt top or cracked and crumbly
pavement, or both.
GC-21
between Teror and Valleseco has many such bad sections, usually around a 100m
long.
Closer
to Artenara and everything after that, is pretty much all nice smooth asphalt.
The
Roque Bentayga from GC-210
