India's marathon boy, aged three

He runs seven hours at a stretch, sometimes as much as 48km (30 miles). On a daily basis.

And Budhia Singh is just three and a half years old.

When Budhia's father died a year ago, his mother, who washes dishes in Bhubaneswar, capital of the eastern Indian state of Orissa, was unable to provide for her four children.

She sold Budhia to a man for 800 rupees ($20).

But the young boy came to the attention of Biranchi Das, a judo coach and the secretary of the local judo association.

Fears for Indian 'marathon tot'

May 2006 - Health fears ground marathon tot