Justyna Kowalczyk (pronounced [jusˈtɨna kɔˈvalt͡ʂɨk] ([1] listen), born January 19, 1983) is a Polish cross country skier who has been competing since 2000. Kowalczyk is an Olympic Champion and a double World Champion. She is also the only skier who won the Tour de Ski four times in a row and one of two female skiers, who won the FIS Cross-Country World Cupthree times in a row (the other one being Finn Marjo Matikainen). Kowalczyk holds the all-time record for the most wins in Tour de Ski with 14 competitions won and 29 podiums in total.