Biathlon debuted at the 1960 Winter Olympics in Olympic Valley, California with the men's 20 km individual event. At the 1968 Winter Olympics in Grenoble, the men's 4 × 7.5 km relay debuted, followed by the 10 km sprint event at the 1980 Winter Olympics in Lake Placid, New York. Beginning at the 1992 Winter Olympics in Albertville, women's biathlon debuted with the 15 km individual, 3 × 7.5 km relay, and 7.5 km sprint. A pursuit race was included at the 2002 Winter Olympics in Salt Lake City. The top 60 finishers of the sprint race would qualify for the pursuit event. The sprint winner starts the race, followed by each successive biathlete at the same time interval they trailed the sprint winner in that event. At the 2006 Winter Olympics in Turin, a mass start was introduced where the top 30 biathletes from the previous four events were allowed to start together for the competition.