Seattle Marathon was created in 1970.
New York City Marathon was created in 1970.
Singapore Marathon was created in 1982.
Nagoya Marathon was created in 1984.
Lisbon Marathon was created in 1986.
Chuncheon Marathon was created in 1946.
Nottingham Marathon was created in 1981.
Boston Marathon was created in 1897.
Utrecht Marathon was created in 1978.
Autumn Marathon was created in 1979.
Antarctica Marathon was created in 1995.
Tiberias Marathon was created in 1977.
Columbus Marathon was created in 1978.