There is a network of about 80 km of track for cross-country skiing; 28 km of this is a lighted track. The trails are maintained in good condition during the ski season, making with worthwhile to come to ski in Varkaus even from a longer distance.
More information about the cross-country ski network and skiing overall in Varkaus (in Finnish):
Varkaus, cross-country ski trails
Welcome, skiing is fun!