Portland Marathon was created in 1972.
The Portland Marathon is an annual marathon sporting event held in the city of Portland, Oregon. It was first held in 1972 and has been held every year since.
New York City Marathon was created in 1970.
Frankfurt Marathon was created in 1981.
Singapore Marathon was created in 1982.
Baystate Marathon was created in 1990.
Växjö Marathon was created in 1994.
Prague Marathon was created in 1995.
Lausanne Marathon was created in 1993.
Baltimore Marathon was created in 2001.
Munich Marathon was created in 1980.
Lisbon Marathon was created in 1986.
Cowtown Marathon was created in 1978.