Marathon
Distance
The length of an Olympic marathon was not precisely fixed at first, but the marathon races in the first few Olympic Games were about 40 kilometres (25 mi), roughly the distance from Marathon to Athens by the longer, flatter route.

Marathon

Section Title: Distance
Table Section Text: The length of an Olympic marathon was not precisely fixed at first, but the marathon races in the first few Olympic Games were about 40 kilometres (25 mi), roughly the distance from Marathon to Athens by the longer, flatter route.

Olympic marathon distances

Year	Distance (km)	Distance (miles)

1896	40	24.85

1900	40.26	25.02

1904	40	24.85

1906	41.86	26.01

1908	42.195	26.22

1912	40.2	24.98

1920	42.75	26.56

1924 onward	42.195	26.22

Sentence(s)

A marathon course is 42.195 km.

final_sentence: A marathon course is 42.195 km.