Aug. 11 (UPI) -- A former college track star unofficially broke a world record when he ran a mile in 4 minutes and 17 seconds while pushing his daughter in a stroller. Stephen Biebelhausen, a former runner for Miami University in Ohio, ran in the Guardian Mile race across Cleveland's Hope Memorial Bridge while pushing his daughter, Blake, in a stroller. Biebelhausen finished with a time of 4 minutes and 17 seconds. "I truly did not think I was going for the world record," Biebelhausen told Runner's World. "I thought on a good day I could break the course record of 4:44 and get into the 4:30s."