Runners at a 100-kilometer relay in Shenzhen yesterday. More than 300 10-man relay teams from the Pearl River Delta area, including Shenzhen, Hong Kong, Dongguan, Foshan, Zhongshan and Guangzhou, took part in the race that began at Longgang Universiade Sports Center in Longgang District. The two winning teams will compete in a national final in Yanqing in Beijing on June 26.China News Service