Marathon races
In what city does the world's oldest annual marathon take place?
Marathon
 races. Annually, more than 500 marathons are organized worldwide. Some of these belong to the Association of International Marathons and Distance Races (AIMS) which has grown since its foundation in 1982 to embrace over 300 member events in 83 countries and territories. The marathons of Berlin, Boston, Chicago, London, New York City and Tokyo form the World Marathon Majors series, awarding $500,000 annually to the best overall male and female performers in the series. In 2006, the editors of Runner's World selected a "World's Top 10 Marathons", in which the Amsterdam, Honolulu, Paris, Rotterdam, and Stockholm marathons were featured along with the five mentioned above. Other notable large marathons include United States Marine Corps Marathon, Los Angeles, and Rome. The Boston Marathon is the world's oldest annual marathon, inspired by the success of the 1896 Olympic marathon and held since 1897. The oldest annual marathon in Europe is the Košice Peace Marathon, held since 1924 in Košice, Slovakia. The historic Polytechnic Marathon was discontinued in 1996. The Athens Classic Marathon traces the route of the 1896 Olympic course, starting in Marathon on the eastern coast of Attica, site of the Battle of Marathon of 490 B.C.E., and ending at the Panathenaic Stadium in Athens. The Midnight Sun Marathon is held in Tromsø, Norway at 70 degrees north. Using unofficial and temporary courses, measured by GPS, races of marathon distance are now held at the North Pole, in Antarctica and over desert terrain. Other unusual marathons include the Great Wall Marathon on The Great Wall of China, the Big Five Marathon among the safari wildlife of South Africa, the Great Tibetan Marathon – a marathon in an atmosphere of Tibetan Buddhism at an altitude of , and the Polar Circle Marathon on the permanent ice cap of Greenland. The Intercontinental Istanbul Eurasia Marathon is the only marathon where participants run over two continents (Europe and Asia) during the course of a single event. In the Detroit Free Press Marathon, participants cross the US/Canadian border twice. The Niagara Falls International Marathon includes one international border crossing, via the Peace Bridge from Buffalo, New York, United States to Fort Erie, Ontario, Canada.