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Antti Viskari (born May 1, 1928 in Joutseno, Lappeenranta, Etelä-Karjala, Finland- 2007) is a Finnish former long-distance runner. He has a personal best for the marathon of 2:21:27 which he set in 1960. Viskari competed in the marathon at the 1960 Summer Olympics in Rome, placing 53rd. He won the 1956 Boston Marathon. He died in Finland in 2007.