Kalmar to Uppsala train with Krösatågen

SJ is a Swedish train company that offers a wide range of services to its passengers. It operates high-speed trains, regional trains, and night trains, all of which are comfortable and reliable. The high-speed trains, X2000, are the fastest way to travel between cities, while the regional trains, Pågatåg, are perfect for shorter trips. The night trains, SJ Nattåg, offer a comfortable way to travel overnight. SJ offers a variety of ticket types, including single tickets, return tickets, and SJ Prio tickets, which offer discounts for frequent travelers. Onboard facilities include free Wi-Fi, power outlets, and a café car. The most popular routes for SJ are between Stockholm and Gothenburg, Stockholm and Malmö, and Stockholm and Uppsala.

Mälartåg is a Swedish train company from the Mälardalen region operating in the Stockholm, Sörmland, Uppsala, Västmanland, Örebro and Östergötland. Mälartåg's train fleet consists of double-deckers and smaller regional trains with a maximum speed of 200 km/h.

Öresundståg is a train company based in Sweden and Denmark. It operates a wide range of services, including regional, express and night trains. The regional trains offer frequent stops and are the most affordable option, while the express trains are faster and more comfortable. The night trains provide overnight journeys and are a great way to save time and money. The company offers a variety of ticket types, including single tickets, return tickets, and group tickets. Onboard facilities include free Wi-Fi, power outlets, and comfortable seating. The most popular routes for Öresundståg are between Copenhagen and Malmö, Gothenburg and Malmö, and Stockholm and Malmö. These routes offer travelers a convenient and affordable way to travel between the two countries.

Krösatågen is a regional train system in southern Sweden, operating since 1985. It's a collaboration between county transport companies in Jönköping, Kalmar, Halland, Blekinge, Kronoberg, and Skåne, with trains currently run by SJ Krösa. The network spans from Hässleholm in the south to Linköping in the north, and Halmstad in the west to Kalmar in the east, serving numerous destinations in between. The name "Krösatågen" comes from earlier trains used to pick lingonberries ("kröson") in Småland. Tickets are purchased through the regional public transport authorities or the Resplus system, as tickets cannot be bought on board.