Sweden is the biggest Nordic country and very convient to use public transportation like train, flight, bus, car or taxi. However the distance in Sweden can be large, Sweden have the right choice for you out from your pocket.
Trains are comfortable and efficient with modern design to deal with all kind of weather, which can be rough. Roads and motorways are by international standards and normally relative free and the only problem sometimes are deer or elk crossing the road.
Sweden are well organized and developed regarding regional airports around the country, so of course the quickest way for travel, but also the most expensive is flying. The country of Sweden is covered by lakes, islands and canals and therefore you also will find a lot of ferries, canal boats and vintage steamers.