If participants want to run or jog with a stroller or buggy with their children during an event, they should first read the event description on ACTIVE.com. These kinds of restrictions or inclusions depend completely on the event director, so if the stroller policy is not mentioned in the event description or event website, the participant should reach out to the event director via their website or email address. 

Be aware that events which are affiliated with USATF (USA Track & Field) often discourage the use of strollers. Many "family fun" events, though, will permit and encourage strollers to line up at the back of the finish line.