Oslo Marathon in Oslo
The Oslo Marathon has run annually, typically in September, since its debut in 1981. New York City Marathon founder Fred Lebow once took part and praised it as a model for other race organizers. With only about 80 metres of total elevation gain across a flat route through central Oslo and along the Oslofjord, it has earned a reputation as one of Norway's flattest and most accessible city marathons.
The Oslo Marathon has been run every year since its first edition in 1981, and in the decades since it has grown into something Norwegians sometimes only half-jokingly call the country's third national day, a description that captures how thoroughly the race has embedded itself into the city's annual rhythm each September.