IMPORTANT - Do not rely on estimated cook times. Use a digital meat thermometer to determine when your roast has reached desired doneness.
Times will vary depending on size of your roast and your oven.
Larger or smaller roasts will require you to adjust your approximate cooking times accordingly.
If you want a roast that is more done than the one in this recipe (e.g. Medium, Medium-Well, Well), you can increase the cook time. Just remember that it will continue to cook during rest period and work that into your formula.
Approximate Internal Temperatures
Rare meats | 120° to 125° | bright red center that grows slightly pinkish towards the exterior.
Medium rare meats | 130° to 135° | extremely pink center portion that grows brown towards the exterior.
Medium meats | 140° to 145° | light pink center, brown outer portions.
Medium well | 150° to 155°.
Well done | 160°