A Chinese marathon runner chain-smoked for the duration of a race - and still finished in less than three and a half hours. Nicknamed "Uncle Chen", the serial smoker leant on the old habit while completing the Xin'anjiang Marathon near Shanghai last week. Chen, 50, finished the arduous race in just 3hrs 28mins and placed 574th out of more than 1,500 competitors. After pictures of Chen went viral on social media site Weibo, race organisers shared his race certificate and confirmed the impressive finishing time. Chen has also been pictured chain-smoking while tackling other events, including the 2018 Guangzhou Marathon...