How long does pork tenderloin take on a pellet grill?

About 1 to 1.5 hours at 225°F, depending on thickness — straight smoking usually runs 45 minutes to 75 minutes, and adding a high-heat sear puts you toward the top of the range. Always go by internal temperature: pull at 140 to 145°F at the thickest point, never by time alone.

Can you overcook pork tenderloin?

Very easily — it is one of the leanest cuts of pork, with almost no fat to buffer mistakes. Past about 150°F it turns dry and gray quickly. Use a fast, accurate thermometer, start checking early, and pull at 140 to 145°F so carryover cooking lands you at the safe 145°F without overshooting.

Is it safe if pork tenderloin is pink in the middle?

Yes. The USDA-safe internal temperature for whole cuts of pork is 145°F followed by a 3-minute rest, and at that temperature the center is often blush pink and juicy. Pink at 145°F is a sign you cooked it correctly — judge doneness with a thermometer, not by color.

What wood pellets are best for pork tenderloin?

Fruit woods are the classic match — apple and cherry add a mild sweetness that suits pork perfectly. Hickory or a signature-style blend gives a stronger, more traditional smoke. Because the cook is only about an hour, even bolder pellets will not overpower this cut.

Pellet Grill Pork Tenderloin

Name: Pellet Grill Pork Tenderloin
Prep time: PT15 minutes
Cook time: PT1 hour 15 minutes
Total time: PT1 hour 30 minutes
Yield: 4 servings
Cuisine: American BBQ
Ingredients: 2 pork tenderloins (about 1 to 1.25 lbs each); 1 tbsp olive oil; 1 tbsp brown sugar; 2 tsp kosher salt; 2 tsp smoked paprika; 1 tsp garlic powder; 1 tsp onion powder; 1 tsp black pepper; 1/2 tsp dried thyme; 1/4 tsp cayenne pepper (optional)

Pellet grill pork tenderloin is the fastest route from "what's for dinner" to genuinely impressive wood-fired food: about an hour of smoke, a five-minute rest, and you are slicing juicy, rosy medallions that taste like they took all afternoon. It is also one of the easiest cuts to ruin, for exactly the same reason it cooks so fast — pork tenderloin is extremely lean, and the line between perfect and dry is about ten degrees wide. This recipe keeps you on the right side of that line: smoke at 225°F, optionally sear hot at the end, and pull at 140 to 145°F so the rest carries it to the USDA-safe 145°F.

This recipe works on any pellet grill — Traeger®, Pit Boss, Camp Chef, Z Grills, or any other brand — the technique translates one-to-one.

Tenderloin Is Not Pork Loin

Worth clearing up before you shop, because the two get confused constantly and they do not cook the same:

Pork tenderloin is a small, tapered cylinder weighing about 1 to 1.5 lbs. It is the most tender muscle on the pig, very lean, and cooks in about an hour. That is what this recipe uses.
Pork loin is a much larger, wider roast (2 to 5 lbs) with a fat cap. It needs a longer cook and different timing.

If your package weighs four pounds, you have a loin — the temperatures here still apply, but the timing will not.

Prep: Silverskin and Seasoning

Remove the silverskin. The shiny, silvery membrane running along one side of the tenderloin does not render or soften during cooking — it just contracts, curls the meat, and chews like packing tape. Slide a sharp, thin knife under one end, angle the blade slightly upward against the membrane, and strip it off in a few passes. It takes two minutes and it is the single most important knife work in this recipe.

Season simply. A light coat of olive oil, then an even layer of the brown sugar rub on all sides. The touch of sugar helps the exterior brown during a relatively short cook and plays especially well if you plan to sear. This cut is mild and tender, so the rub carries a lot of the flavor — but resist the urge to cake it on so thick it turns to crust before the smoke gets in.

Brining is optional for tenderloin. Unlike our pellet grill chicken breast, where the brine is the foundation of the recipe, a tenderloin pulled at the right temperature stays juicy on its own. If you know you tend to run cuts a little long, a 1-hour brine (4 cups water, 1/4 cup kosher salt, 2 tbsp sugar) adds a margin of safety.

Setting Up the Pellet Grill

Fill the hopper. Fruit woods are the classic pork pairing — apple and cherry add gentle sweetness — while hickory or a balanced option like Signature Blend pellets gives a more traditional BBQ profile. With a cook this short, you will not over-smoke it either way. Our wood pellet flavor guide maps pellets to proteins if you want to go deeper.
Set the grill to 225°F and preheat for 15 minutes with the lid closed. The low temperature is what buys you real smoke flavor in a one-hour window; hotter and the tenderloin finishes before the smoke has done much.

If you are still learning your grill's controls and quirks, run through our first cook guide before starting — this recipe moves quickly at the end.

The Cook: Smoke Low, Then (Optionally) Sear Hot

Place the tenderloins on the grates with a couple of inches between them and close the lid.
Smoke at 225°F. Total time runs 45 minutes to 1 hour 15 minutes depending on thickness — call it 1 to 1.5 hours for the whole cook if you include the sear and rest.
Start checking temperature at the 40-minute mark, in the thickest part of the tenderloin. The tapered tail end will always run ahead; you can tuck it under and it will simply be the well-done piece for whoever wants it.

Path A: Straight Smoke

Leave the tenderloins at 225°F until the thickest part reads 140°F, then pull. Simple, hands-off, maximum smoke. The exterior will be mahogany but not crusty.

Path B: The Reverse Sear

For a browned, steakhouse-style crust: pull the tenderloins at 130 to 135°F, crank the grill to 450-500°F (or heat a cast-iron skillet), and sear 1 to 2 minutes per side, rolling to hit all surfaces, until the internal temperature reaches 140 to 145°F. The sear moves fast on a cut this small — this is not the moment to walk away.

145°F: Safe, Juicy, and Yes, a Little Pink

The USDA-safe internal temperature for whole-muscle pork is 145°F, followed by a 3-minute rest — a standard updated back in 2011, though plenty of cooks are still following the old 160°F habit that made pork's dry reputation. Pull at 140 to 145°F and rest 5 to 10 minutes under loose foil; carryover cooking closes the gap to 145°F without overshooting.

At 145°F the center is faintly pink and distinctly juicy. That pink is not undercooked — it is the entire point. Judge this cut by the thermometer, never by color. And because the window between perfect (145°F) and dry (155°F+) is so narrow, thermometer speed and accuracy genuinely matter here: an instant-read like the Thermapen One reads in about a second, so you can check the thickest point and get the lid closed before the grill loses heat.

The overcooking warning, stated plainly: pork tenderloin has almost no internal fat. There is no collagen to render, no fat cap to baste it, nothing to rescue it if you cruise past 150°F. This is a cut you cook with the thermometer in your hand, not one you check "when the timer goes off."

Slicing and Serving

Rest, then slice into 1/2- to 3/4-inch medallions across the grain. Tenderloin's mild flavor makes it a versatile canvas: serve the medallions with roasted vegetables and a pan sauce, fan them over grits, pile them into tacos with slaw, or slice thin for sandwiches the next day. Leftovers keep airtight in the refrigerator for up to 4 days — reheat gently in a covered skillet with a splash of broth so your perfectly cooked pork stays that way.

Final Thoughts

Pellet grill pork tenderloin is the weeknight proof that wood-fired cooking does not have to mean all-day cooking: 225°F of smoke, an optional blast of sear, off at 140 to 145°F, and rested to a safe, blush-pink 145°F in about an hour and a half, start to finish. Nail the pull temperature once and this becomes a permanent part of your rotation.

Explore more: First Cook on a Pellet Grill | Wood Pellet Flavor Guide | All Recipes