Runners en route to the Nanga Bawa Peak during the opening day of the Nanga Bawa Mountain Marathon, November 8, 2020. After the inaugural event held four years ago, the second event kicked off in Linzhi City, southwest China's Tibet Autonomous Region, attracting a total of 186 runners from across China to run at an altitude between 2,900m and 3,200m above sea level. /CFP
Runners en route to the Nanga Bawa Peak during the opening day of the Nanga Bawa Mountain Marathon, November 8, 2020. After the inaugural event held four years ago, the second event kicked off in Linzhi City, southwest China's Tibet Autonomous Region, attracting a total of 186 runners from across China to run at an altitude between 2,900m and 3,200m above sea level. /CFP