These trails became primitive roads which were eventually paved. The country has an extensive network of paved and unpaved roads. Adventure motorcycles are motorcycles with touring capability on paved and unpaved roads. Most main roads are now paved. A combination of paved and coral gravel roads serves the marina area. Alberta has over of highways and roads, of which nearly are paved. Street motorcycles are motorcycles designed for being ridden on paved roads. These paths were later paved, and now function as major roads. Both roads are paved and operate all year round. Typically they are improved earth roads which are occasionally paved. Its streets were paved with granite but badly maintained. Iceland has of administered roads, of which are paved and are not. Unlike the earlier road, the Minoan road was completely paved. Roadways extended , of which is paved. In total, Ukrainian paved roads stretch for .