How Long to Grill Filet Mignon?

You will grill a filet migon according to how thick it is, and your taste. A nice 1 1/2 inch cut of meat will need to be grilled over medium-hot coals for 14 to 18 minutes for rare, and 18 to 20 minutes for medium. You can touch the meat and it should give a little when it is cooked to medium.