The drive would take less than three days each way[1]. Spring is upon us, and the temperatures en-route currently straddle the freezing point[2][3].
[1] https://www.google.co.uk/maps/dir/Moscow,+Russia/Oslo,+Norwa...
[2] https://www.google.co.uk/search?q=weather+olderfjord [3] https://www.google.co.uk/search?q=murmansk+weather+10+day+fo...