In October, the Costa Blanca is a good alternative to Mallorca. (
@ColinJ amongst others know this area well). Stay in Calpe, Moraira, or Denia. Or even Benidorm, from where you can access all the amazing inland rides. If you want to be closer to the 'action' try the Jalon valley; Alcalali, Parcent, Jalon (good variety of restaurants), all within the stunning mountainous and quiet region. I think it's one of the greatest cycling regions in the world, although having said that, I'm off to Mallorca again in a couple of weeks; 16th visit and I never tire of the riding in the S/SW of the island.
If you want a cycling package, as opposed to just booking your own hotel or self catering, try
Moraira Cycling and
Citrus Cycling.
In Jalon last Novemeber we stayed
here, within walking distance of the town, and immediate access to glorious rides.
We've also stayed in
Guadalest at a very cycling friendly and superb little hotel up in the mountains.
Fly to Alicante, or ferry to Bilbao or Santander, and a nice drive down.
We liked Tuscany in October also, but the weather is perhaps a little less reliable, and the cycling isn't as good imho.