Helsinki was elected host-city of the 1940 Summer Olympics, but due to World War II they were canceled. Instead Helsinki was the host of the 1952 Summer Olympics. The Olympics were a landmark event symbolically and economically for Helsinki and Finland as a whole that was recovering from the winter war and the continuation war fought with the Soviet Union. Helsinki was also in 1983 the first ever city to host the World Championships in Athletics. Helsinki also hosted the event in 2005, thus also becoming the first city to ever host the Championships for a second time. The Helsinki City Marathon has been held in the city every year since 1981, usually in August. A Formula 3000 race through the city streets was held on 25 May 1997. In 2009 Helsinki was host of the European Figure Skating Championships, and in 2017 it hosted World Figure Skating Championships. The city will host the 2021 FIBA Under-19 Basketball World Cup.