Map for 2021 Yellow River Stone Forest 100km trailrun (i.e. Gansu (Baiyin) Ultramarathon). See Gansu ultramarathon disaster for Wikipedia article.There were also 5km and 21km (amateur) races hold simultaneously (see the official map). Our map here only shows the full, 100km race in which the disaster happened.
Own work. Route according to the organizer's WeChat Public Account
Tomchen1989