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8 Tips For Smoking Costco Pork Loins On Traegers

Traeger Costco Pork Loin

Costco sells a lot of great cuts of meat that do well on a Traeger grill. Especially pork loins and pork tenderloins. 

The cooking time and temperature of a pork loins roast will vary depending on the size of the meat, and whether you want to grill it, roast it or smoke it. 

Smoking a pork loin roast or pork tenderloin on Traeger calls for a temperature of 225 to 250-degrees. This will take roughly half an hour per pound to reach an internal temperature of 145 to 155-degrees. 

If you want to roast a pork loin or pork tenderloin at 350-degrees, it will take roughly 25 minutes per pound to reach 145-degrees. 

To grill a pork tenderloin over high heat, then you need to set your Traeger grill to 425 to 450-degree. Rotating the meat every 5 minutes or so, will get you to an internal temperature of 145+ degrees in about 18 to 25 minutes. 

To accurately test the internal temperature of the meat, you want to insert an instant-read probe thermometer into the thickest part of the meat in the middle, away from any bones or fat deposits. 

Season your pork loin roast or pork tenderloin with a blend of brown sugar, and salt for at least 4 hours to help draw out the water-soluble proteins in the meat. You can then add accent flavors like garlic powder, paprika, cayenne pepper, or an herb crust right before smoking in your Traeger grill. 

How Long Do You Cook Costco Pork Tenderloin?

When you grill a pork tenderloin on a Traeger grill at a temperature of 425 to 450-degrees, you can reach an internal temperature of 145 to 160-degrees in roughly 18 to 25 minutes. Rotating the meat every 5 minutes will ensure an even, flavorful sear on the exterior of the meat. 

If you are smoking a pork tenderloin on a Traeger grill, at a temperature of 225 to 250 degrees it will reach an internal temperature of 145 to 155 degrees in around two and a half hours. Giving it a hearty seasoning rub the night before will help draw out water-soluble proteins to help deliver smoky flavor deep into the meat. 

What Temperature Do You Cook a Pork Loin At?

225 to 250-degrees is the best temperature range to slow smoke a pork loin roast on a Traeger grill. The total cook time will work out to around 30-minutes per pound to reach an internal temperature of 145 to 155-degrees. 

If you want to roast a pork loin on a Traeger grill, you should target a temperature of 350-degrees. This will take around 25 minutes per pound to reach an internal temperature of 145 to 155-degrees.

What Internal Temperature Should a Pork Loin Be Cooked To?

A pork loin is considered safe to eat when it reaches an internal temperature of 145-degrees. Though a lot of people cook it longer until it reaches 160-degrees, which renders additional fat and connective tissue for a more tender, succulent roast. 

How Long Does It Take to Smoke a 2 lb. Pork Loin at 225?

At 225-degrees a 2-pound pork tenderloins or pork loin roast will need around 1-hour to reach an internal temperature of 145 to 155-degrees. This translates into roughly 30-minutes per pound.  

Where Do You Insert the Temperature Probe?

Inserting the temperature probe into the middle of the thickest part of the meat away from any bones or fat will give you the most accurate internal temperature reading for a pork loin roast or pork tenderloin. 

What Seasoning to Use? 

An easy seasoning rub for a 5-pound pork loin roast calls for ½ cup of brown sugar, ¼ cup of salt, 2 tablespoons of paprika, 2 tablespoons of garlic powder, fresh cracked black pepper, and 1 teaspoon of cayenne pepper. Rubbing it on the pork 4 to 8 hours before smoking will help draw out water-soluble proteins to create a more flavorful crust while drawing more smoky flavors into the meat. 

Herb-crusted pork loin roasts and pork tenderloin roasts are also very tasty on a Traeger grill. This starts with the same ½ cup of brown sugar, ¼ cup of salt, 2 tablespoons of paprika, and 2 tablespoons of garlic powder, as an advanced seasoning rub. 


Right before you bring it to the smoker, paint the pork loin roast with a mixture of Dijon mustard and soy sauce. Then sprinkle on liberal amounts of fresh rosemary, thyme, and Greek oregano.  

Final Thoughts

The pork loin roasts and pork tenderloins at Costco take well to roasting, smoking, or searing on a Traeger wood pellet grill. Though the cooking time will vary depending on the size of the meat, and the cooking method. 

You can smoke a pork loin roast or pork tenderloin on Traeger at a temperature of 225 to 250-degrees. It will take roughly 30-minutes per pound to reach an internal temperature of 145 to 155-degrees. 

To roast a pork loin or pork tenderloin, you should set your Traeger to 350-degrees. This will take roughly 25 minutes per pound to reach 145-degrees. 

If you want to grill a pork tenderloin with a seared-on crust, you should set your Traeger to 425 to 450-degrees. You should then turn the meat every 5 minutes until it reaches an internal temperature of 145 degrees, which will take about 18 to 25 minutes. 

The best way to check the internal temperature of a pork loin is to insert an instant-read probe thermometer into the thickest part of the meat in the middle. Just make sure to stay away from any bones or fat deposits. 

To season a pork loin roast or pork tenderloin you can use a blend of brown sugar, and salt with accent flavors like garlic powder, paprika, cayenne pepper, or even an herb crust. Ideally, you want to give the pork at least 4 hours with the seasoning rub to let the meat soak up the seasonings and draw water-soluble proteins to the surface.