Is this the sky event? It's a running event in Seoul Korea.
https://www.yahoo.com/news/video/hundreds-runners-ran-vertical-marathon-194036682.html
The vid shows the words "SKY EVENT" in big blue letters.
"The Lotte World International Sky Run - the highest and longest in the world - drew runners from the across the globe."
Then there is this on facebroke.. https://www.facebook.com/skyeventskorea