A field of 15,000 finishers is expected this weekend.
The 32nd-place finisher at the Olympic Marathon Trials bounces back in a big way.
Nick Arciniaga and Jason Hartmann are hoping to bounce back from disappointing Olympic Trials races.
The invited athletes met with the press on Friday.
Brett Gotcher and Nick Arciniaga lead the way on the men's side.
Olympic medalists Bernard Lagat and Shalane Flanagan headline the U.S. contingent in Korea.
He edged out Aaron Braun at the finish.
Runnerspace.com is streaming the event live this Saturday.
He won with a 28-second margin.
It's the first elite field in the 5K's 3-year history.