Biathlon is a sport played in Winter Olympic Games and which involves cross-country skiing (skiing in quite flat paths or through the country, and doing so the fastest possible) and shooting a target with a rifle.
http://www.olympic.org/videos/biathlon-women-s-12-5km-mass-start-domracheva-wins-gold
+International Biathlon Union: http://www3.biathlonworld.com/en/
+http://www.sochi2014.com/en/biathlon