How long do you cook a 4 lb top round roast?

Cooking times will vary slightly depending on the exact cut of meat, but as a general guideline, you can cook a 4 lb top round roast for about 20-25 minutes per pound at 350°F (175°C). This means that a 4 lb top round roast should take approximately 80-100 minutes to cook.

To be sure that the roast is cooked to the desired doneness, you can use a meat thermometer. The internal temperature of the roast should reach 145°F (63°C) for medium-rare, 160°F (71°C) for medium, and 170°F (77°C) for well-done.