If you're looking to come to the island of Sardinia, please be aware of the following sites for download of itineraries used by professional cycling tour guides.
Cycling guide of Sardinia (http://www.sardegnadigitallibrary.it/documenti/17_81_20090205111136.pdf) GPS Coordinates available upon request.
Sardegna Grand Tour interactive (http://www.sardiniagrandtour.com/it/free/)
Kevin Bruce Legge