Ritzenhein To Run Chicago Marathon
The three-time Olympian will also run the Shamrock Shuffle in April.
The three-time Olympian will also run the Shamrock Shuffle in April.
The world's largest 8K kicks off on April 7.
The Hansons-Brooks Distance Project won the Elite Club Competition.
She's running the New York City and Chicago Marathons.
The Paris Marathon is the biggest contributor.