More than 18,000 runners took to the streets of the Windy City for the 2017 Humana Rock 'n' Roll Chicago Half Marathon and 10K.
A 5K event kicked off the Humana Rock 'n' Roll Chicago race weekend, with sunny skies and a successful finish by Katherine Switzer.
The 48-year-old civil engineer from Kansas City, Missouri, is running his 100th Rock 'n' Roll Marathon series event in Chicago this weekend.
She's running this weekend's Rock 'n' Roll Chicago 5K as part of her training for the NYC Marathon this fall.
The wear blue Mile will be on display for the first time at the Rock ‘n’ Roll Chicago Half Marathon, honoring 75 service members.
Andrea Abel had more than 100 race medals stolen from her while moving, in which 14 were replaced by the Rock 'n' Roll Marathon Series.
More than 18,000 runners toed the start line at the annual Alaska Airlines Rock ‘n’ Roll Seattle Marathon & ½ Marathon on Sunday.
Alaska Airlines Rock ‘n’ Roll Seattle kicked off race weekend with an inaugural 5K on Saturday. Thousands of runners toed the start
Rock 'n' Roll Seattle race participants will experience a brand new course and have the opportunity to run the 5K this weekend.
Kamika Smith, 55, is running his 155th half marathon total and 100th Rock 'n' Roll Race Series event this weekend in Seattle.