David Rudisha's coach says they are looking for an "extra edge."
LaTasha Lewis says to start by committing fully to the race.
Two runners tackle washed-out trails in search of their homes.
Three hundred members are taking part in the "shadow run."
Garret Heath and Morgan Uceny won at Manchester's Great CityGames.
The 27-year-old Kenyan ran the fastest half-marathon time on a record-eligible course in the U.S. this year.
The world record holder has a knee injury.
He wrote the first responder plan that was used on April 15.
He's never had formal golf lessons, but he's surely fast.
More than 10,000 of the 22,000 slots reserved for time-qualified athletes are full through two days.