Japan 's Mount Kaido is a spectacular 60-kilometer road and rail network . The whole route has cycle paths and offers views of the Seto Inland Sea National Park . Japan 's Shimanami Kaido might be an expressway , but it was designed with the cyclist in mind . Cyclists cross the 4,045-meter Kurushima Bridge , the world 's longest suspension bridge .
Japan 's Mount Kaido is a spectacular 60-kilometer road and rail network . The whole route has cycle paths and offers views of the Seto Inland Sea National Park . Cyclists cross the 4,045-meter Kurushima Bridge , the world 's longest suspension bridge .