An alternative to Mallorca Training Camp or if you want to take the family to the sun and cycle...
A friend at work has a flat for rent in Costa Blanca. Haven't used it myself, but plenty of folk at work have and all reports are excellent.
Summary..."two bed apartment costablanca, ideally situated for cycling, includes the use of a TREK MTB and a Cannondale CAAD8 roadbike.
See cycling tab for details (can also deliver hire bikes)"
https://sites.google.com/site/blancaholiday/home