Hundreds of challenge seekers and those looking for a break from their daily routines participated in the Lotte World Tower International Sky Run Sunday in downtown Seoul.
Runners from all over the world strived to cross the finish line of the longest and highest vertical-running marathon out of nine different international Vertical World Circuit races.
Some 1,500 participants were divided into three groups: elite, individual, and relay. They sprinted up to a total 1,820-foot high, 123-story building with 2,971 stairs.
The Lotte competition has 691 more stairs compared to those of the race at One World Trade Center in New York.