You can catch from Narvik a train via Kiruna. Boden to Lulea :)
From Lulea you can use included Buses via Happaranda/Tornio (Twin border towns) to Kemi (Finland) From Kemi you have railconnections to Rovanemi, Helsinki,Turku, Oulu :)
The leg Lulea - Happaranda can be done since few months by train too.
Thats in the far north-above the Botnic sea. I just read that they will electrify also the short line inside FI and make a train connection again all the way-to start 2024.
For now there is just a short section (about 20 kms) to cover by bus-there are NO buses from sat/midday till sun/midday. There are 2 companies, 1 of these accepts IR. There are also a very few direct BUSlines from the upper north of NO into FI, but these are quite expensive.
There are also numerous-and some very luxurious and still quite cheap- ferries over that sea between Sverige and Suomi (Finland). Some give discounts to passholders. Viking and Silja/Tallink are best known and biggest.
Has anyone tried the route from Boden to Haparanda recently? I am trying to decide whether to get the ferry from Umea to Vaasa in Finland and then get the train north to Rovameini because the far north connection seems to be so complicated.Thanks for any suggestions!