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