Kass (left) and Bill (right) Ardinger of Concord cheer on participants with their 26-year-old daughter, Taylor, during the annual Rock 'N Race 5K in downtown Concord on Thursday, May 17, 2018. Taylor was diagnosed with a sarcoma in November. (ELIZABETH FRANTZ / Monitor staff)
Kass (left) and Bill (right) Ardinger of Concord cheer on participants with their 26-year-old daughter, Taylor, during the annual Rock 'N Race 5K in downtown Concord on Thursday, May 17, 2018. Taylor was diagnosed with a sarcoma in November. (ELIZABETH FRANTZ / Monitor staff) Credit: Elizabeth Frantz—Monitor staff

Thousands of runners and walkers took part in the annual Rock ‘N Race 5K in downtown Concord on Thursday, May 17, 2018.