How do I train my dog to be a running partner?

first of all, no more dog park until the dog respects you ... why should the dog run beside you when he knows he is going somewhere that he can run wherever, however he wants ... in fact i would keep that dog leash around your waist for hours every single day so he learns where you go, he goes ... he is just untrained ... this is not a stubborn dog issue, this is a smart dog who has taken over ... still is a nice dog i am sure but he is not well trained and does not respect you, otherwise he would run when you run ... i would make him work for every single thing ... sitting and waiting for his food to be put down ... sitting and waiting nicely to have the leash put on ... and no dog park for at least a year, the only running should be beside you ... if you look at his "stubbornness" for what it is, and that is an untrained dog who does not respect his owner it might give you the motivation to be a bit more firm cuz who wants to be outsmarted by a dog ... the dog can be taught to respect you in less than two weeks if you put the right work in and are firm and not soft with the dog ...