Finland

Levi
230 km of trails in untouched natural surroundings of Lapland's nature conservation areas. Levi, Finland.
http://www.levi.fi/pages/index.php?id=3&language=eng

Pyhä
Comprised of two resorts located 110 km north of the Arctic Circle. Organized activity services, spa facilities, downhill and cross country ski slopes and tracks.
http://www.laplandpyha.fi/

Ylläs
250 km of mechanically prepared trails, 38 km of these are illuminated. Includes so-called warm tracks where it might be as much as 15 degrees warmer than down in the village. The skiing season begins in October and lasts until May.
http://www.yllas.fi/?deptid=9048