The island of Kos has long been known as the bicycle island… A lot of effort has been put into developing this kind of activity and there are plenty of roads dedicated to cycling. For the more active amongst you there are plenty of trails all over the island and mountain biking can be quite an adventure. The same really goes for hiking and you can combine a healthy hike with a sightseeing tour as there are plenty of things to see and some are really worth the strain. There are currently great, extremely detailed maps of nearly all the Greek islands for those of you who are interested, please check: Kos terrain maps.