Budhia Awooga Singh (born 2002) is an Indian boy and the world’s youngest marathon runner. Singh was born in the state of Odisha. He ran from Bhubaneswar to Puri at the age of four covering 65 kilometres (40 mi) in seven hours and two minutes and was listed as the world’s youngest marathon runner in the Limca book of records in the year 2006.

Source:Wikipedia