If the runner was a freelancer who gave Runner’s World only first North American rights to the photo (the normal setup) than the picture is the property of the photographer and Runner’s World can’t do a thing. If the picture was taken by a Runner’s World employee and it was their property it would be a different story, but that’s not the case here.
Sorry, a spread like that would have only been shot for the Runner's World article, and paid for from conception; rights should go to the magazine because the photographer was literally on their payroll at the time.