Switzerland has a fully integrated and comprehensive public transport system incorporating trains, buses, boats, funiculars and cable cars. Internal flights are not of great interest to the visitor, owing to the excellent ground transportation. The Swiss rail network covers 5000km (3106mi). Trains are clean, reliable and frequent. Yellow postbuses supplement the rail network and their stations are next to railway stations. There are car-rental agencies in most sizeable towns. Roads are well maintained, well signposted and generally not too congested, though you may find it hard to concentrate with such wonderful scenery unfolding around you. Bicycles can be hired from most railway stations and returned to any station with a rental office. You’ll need calf muscles the size of an ox to get very far though. All the larger lakes are serviced by steamers, and rail passes are valid on most steamer routes.