Jean-Bernard Grondin, 60, is a record-breaking runner in Nice, France. In the space of a month, the native of Reunion distinguished himself with two astonishing times.

This heavy goods vehicle driver has been impressing the Riviera community for a good twenty years. But this time, its reputation has just gone beyond the Mediterranean borders. The rest after this ad is up. Subscribe Already subscribed? To log in, go to: www.dailymail.co.uk/news.