The world's longest race? 4,990km around a New York block

Marcato of Italy after winning the 'Self-Transcendence 3100 Mile Race', the world's longest certified foot race, in the Queens borough of New York on Oct 17. Photo: Ed Jones/AFP

It's the world's longest certified foot race: a 3,100-mile (4,989km) run that takes participants around the same New York block 5,649 times.

Thousands of people have climbed Everest, but organisers say just 49 have completed the Sri Chinmoy Self-Transcendence 3,100 Mile Race.