Beijing xinglong, 18 dec 2016 China forest marathon two-day series RACES at the end of the booming today, hainan hainan player Yang Xinxiang shows the strength of strong, for two consecutive days in 21 kilometers back-to-back title. According to characteristics of successful track, this site with back-to-back set up 21 km, 12 km to experience, and 7 km parent-child ran three projects, from around the country about 500 marathon hobby...