Elite competitors began in rain coverings and at a slow pace in the coldest start since 1988 at 3 degrees celsius with rain often blowing into runners' faces.
They are aspiring ultra-marathon runners, hoping the sport will put their remote village on the map and provide the funds needed to rebuild homes destroyed by 2015 earthquake.
Kenyan-born Frenchman Abraham Kiprotich and Kenya's Ruth Chepngetich have won the the annual Istanbul Marathon in the men's and women's categories.
Five days after the worst attack on New York since September 11, 2001, the city heavily bolstered security for the race with some 2.5 million people packing the streets.
Saturday night will be the last time Bold runs. But that doesn't mean the star's net worth will be affected.
Turkish athlete Ramil Guliyev won gold in the 200 metre sprint in London. It was Turkey's first ever men's gold at the World Championships.
Kenyan athlete Jemima Sumgong wins Women's Elite Race in London Marathon despite her fall near end of race
Ethiopian runners lead Boston Marathon ahead of summer Olympics in Rio, taking top three spots in men's race and top two spots in women's race
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