Preheat oven to 450°. In a small bowl, combine oil, garlic, rosemary, thyme, salt, and pepper. Rub all over roast.
Place roast in roasting pan fitted with a roasting rack. Roast for 15 minutes, then reduce heat to 325° and roast 1 hours 45 minutes more for medium, or 2 hours for medium well done.
Remove from oven and let rest 15 to 30 minutes before serving.
