Sweden isnt frozen all year, I live in the south and we had about 3 weeks of snow this winter. So its not cold everywhere over here, but if you go up north they are frozen several moths a year.
Heres some pics from a race here in Blekinge a couple of weeks ago. Im the one on the GG.
http://picasaweb.google.se/marcus.arnell/EnduroKMRNS185