Mountain Bike Excursions take place Daily (even weekends) during summer season (from May to October), organised by Skiathos Mountain Bikes. Contact them to book the day you like.
Starting point is at Veletzakos Bakery in Skiathos Town (Bus Stop #3) just a few meters away from the main pedestrian street of Skiathos Island, Papadiamantis Street. You only need to be 16+ years old and wear a bright color shirt. You should be at the rendezvous point at least 15 minutes earlier than the scheduled start time.
Skiathos Mountain Bikes team will provide you bikes, helmets, water, glasses, gloves, SPD Pedals and a first aid kit. Bicycling Excursions last about 3 or 4 hours depending on the routes you choose to be part of.