Marathon later recognized by the race organizers as the women's winner for that year, as well as 1967 and 1968. The length of an Olympic marathon was not precisely fixed at first, but the marathon races in the first few Olympic Games were about , roughly the distance from Marathon to Athens by the longer, flatter route. The exact length depended on the route established for each venue. The International Olympic Committee agreed in 1907 that the distance for the 1908 London Olympic marathon would be about 25 miles or 40 kilometres. The organisers decided on a course of 26 miles
Lisbon Half Marathon architecture, including the Belém Tower and Jerónimos Monastery. From 2008 onwards, the organisers set aside a €50,000 prize pot for any athlete breaking the world record over the half marathon distance. This led to the participation of a number of prominent athletes, with marathon world record holder Haile Gebrselassie winning the 2008 edition, while Charles Kamathi and Robert Kipkoech Cheruiyot followed behind. Another strong field was assembled in 2010 and Zersenay Tadese of Eritrea broke both the 20 kilometres and half marathon world records in his winning run. The competition also hosts a mini marathon race, which has featured many