The heat was a factor for everyone but him, it seemed.
He is the man to beat in Moscow.
Not a surprise, given the recent cheating scandals that have rocked the sport.
USATF names its three-person men's marathon team.
The 40-year-old mom will run the marathon.
The course was used for the Russian National Championships last weekend.
Security is top priority for the World Championships in August.
Double-Olympic gold medalist Mo Farah is one of them.
New Zealander triumphs in Massachusetts race as she eyes 10k at Worlds.
Two-time world champion expects to break the mark in Moscow.