Horse Riding
Mal, There's a few, but we used Rancho Grande on the road to Arta via Can Picafort, well sign-posted. Lovely big farm with about 200 horses, with riding in 3 stages from beginers etc. nice countryside. You can book through one of the hotels, but much cheaper to just drive there yourself. In the summer they have 2 sessions, 1 @10am and 1 at 4pm. I would suggest you get there a little earlier so they can saddle up for you. Cost about 25 Euros.
Don't know if the times still stand at this time of year, but if you have the car it's well worth a run down anyway.