Official news agency Xinhua confirmed that 21 of the 172 participants had died, citing the local rescue command headquarters. The other 151 are now safe, according to state media.
Baiyin city mayor Zhang Xuchen said that at around midday Saturday a section of the rugged ultramarathon course — between kilometres 20 and 31 — was “suddenly affected by disastrous weather”.
“In a short period of time, hailstones and ice rain suddenly fell in the local area, and there were strong winds. The temperature sharply dropped,” Zhang said.
— Read on news.yahoo.com/20-runners-dead-extreme-weather-015013647.html