Grace Kim James and Nick running together
We’re serious about staying in shape.
Fitness woman running outdoors in countryside
Jogger resting at beach
Runners including the author at the Boston Marathon finish line
BERLIN, GERMANY - MAY 04:  Irina Mikitenko, Lisa Hahner and Kathrine Switzer attend the 30th AVON Running Women's run in Tiergarten park on May 4, 2013, in Berlin, Germany.  (Photo by Luca Teuchmann/Getty Images)
Active couple jogging
Three Quarter Shot of an Athletic Young Man Doing an Outdoor Running Exercise at the Park
Shot of young woman working out with a box at the gym. Young female athlete box jumping at a gym gym.
People running
happy couple with dog running outdoors
Friends jogging together
You don't need to show up at an official starting line to participate in a virtual race.
Joggers running outdoors
Sports and stretching concept on summer beach
Runners: Don't leave your abs out of your strength-training routine!
Tough Mudder Endurance Race Takes Place In Edinburgh
Running in sand