Source: South China Morning PostAt least 21 competitors in a 100km (62-mile) mountain marathon race in northwest China died from hypothermia after being caught in freezing weather at high altitude, state media reported on Sunday.The cross-country endurance event began on Saturday morning at the Yellow River Stone Forest Park in Baiyin, Gansu province. But as the runners climbed to a height of about 2,000 metres (6,500 feet) above sea level during the 20km-31km section of the race at about 1pm, the harsh conditions descended,…Read More