How Long Does It Take to Cook a Tri-Tip in the Oven?

The tri-tip, which is a sirloin subprimal cut of beef, may be oven roasted in the oven at 425 degrees Fahrenheit for 30 to 35 minutes for medium-rare doneness and 40 to 45 minutes for medium doneness. Since tri-tip cuts have very little fat, roasting in the oven past medium doneness is not a good idea.