How long does a 6lb.5oz beef tenderloin take to get to 125 degrees?

Cooking a 6 lb. 5 oz. beef tenderloin to an internal temperature of 125°F typically takes about 1.5 to 2 hours when using a roasting method at a temperature of 350°F. However, cooking times can vary based on the oven's accuracy, the tenderloin's shape, and whether it is at room temperature before cooking. It's essential to use a meat thermometer to monitor the internal temperature for the best results. Always allow the meat to rest for about 15-20 minutes after cooking to ensure even temperature distribution.