how long does it take to cook a pork roast at 250 degrees?
To cook pork roast uncovered in the oven at 250 F, first preheat your oven and then pat your roast dry with paper towels and season with salt and pepper. Use a roasting pan with a rack and cook in your oven until your roast reaches an internal temperature of 145 F, about 7 to 8 hours.