Here is the route as I recorded it in September 2010. Beyond that, however, there are various alternative routes you can take. As I mostly camped, the paths to the Tossals Verds and Muleta refuges are missing.
As 90 % of the mountain range in the north of Majorca is privately owned, the route can change regularly. Between Banyalbufar and Estellencs, for example, a landowner has currently decided not to let hikers cross his land. As a result you unfortunately now have to walk around 3 km on the road here.
GR221
The GPX track should be treated with caution, as I certainly took a wrong turn once or twice. So rely on your maps and common sense rather than on what I recorded.