A 50-year-old marathon runner managed to smoke his opponents in the Xin’anjiang Marathon in China.

The runner, who is known as "Uncle Chen," finished the 26.2 miles-long race in only 3 hours and 28 minutes, all while chain-smoking a pack of cigarettes. Organizers produced his finishing certificate after the event.

Uncle Chen's improbable feat has gone viral, as he was able to finish 547th. The race featured around 1,500 runners.