All beagles will run no matter how calm they are i used to be able to take mine in the field bahind my house and let her off the leash but once they hit around 6 months the vet told me that there hunting instincs kick in now shes 8 months and she runs any chance she can i have a runner for her in my yard even tho its fenced in shes a digger they all are and they will find a way out i suggest a runner like i have she can still run but cant escape. By experiance once they run its very hard to catch them.