The Chicago Marathon and the World Marathon Majors want their prize money back.
Doping and extortion scandal could have widespread implications for the Russian athletics federation.
Ethiopians rule the the roads in the Windy City.
Will an American runner reach the podium in London?
She's running the New York City and Chicago Marathons.
The Russian wins for the third time in the Windy City.
A win would all but guarantee a second World Marathon Majors crown.
Boston, London races will likely reshuffle the WMM leaderboard.
There will be five sub-2:05 men toeing the line in England's capital next April.