The United States won at least one medal in all four middle distance finals.
Younger runners continue to push new boundaries.
He has led his team to a section championships.
The Brit grabbed gold in the 5,000m on Friday night.
They have to complete two marathons in the span of just 16 days.
The New York Road Runners reversed their initial decision.
There's a reason they are called man's best friend.
The American captured her second career world championship medal on Thursday night.
A look back at Jenny Simpson's career in pictures.
The 33-year-old stays fresh and focused during the season by going for runs