A couple months on the treadmill during preproduction can fix that right up. I never liked that Roland picture, too young and spry, by the time the books start Roland is beat up and tired, he’s been walking for hundreds maybe thousands of years. And it becomes even more so in the later books when he starts with the hip problems and the guilt of the friends he’s let die and the knowledge he’ll let more die. Roland is an old man, nobody with an apparent age under 50, preferably 60, can do it the way it’s written.
Not a big fan of his politics, but Kevin Costner could do Roland.