What Is Pork Tenderloin?
Pork tenderloin is the long, narrow, boneless muscle that runs along the backbone. It’s the leanest, most tender cut on the whole hog — closer in texture to a beef tenderloin than to a pork shoulder — which makes it a great candidate for smoking when you want something ready in under two hours instead of all day.
Don’t confuse it with pork loin, a wider, thicker roast that’s a different cut entirely and needs a different approach. If you’ve got a loin instead of a tenderloin, see our guides to pork loin on a pellet grill at 300°F or a bone-in pork loin on a Traeger instead.
Because tenderloin is so lean, it has almost no internal fat to render and protect it, which is exactly why so many people end up with a dry, chalky result. The good news: with the right temperature and a thermometer, it’s genuinely hard to mess up.
What You’ll Need
- Pork tenderloin — usually sold two to a package, about 1 to 1.5 pounds each
- Binder — olive oil, yellow mustard, or a marinade
- Rub or marinade — a sweet-savory BBQ rub (brown sugar, paprika, garlic, chili powder) or a honey-thyme marinade both work well
- Wood pellets — apple, cherry, maple, or a fruitwood blend; pork tenderloin doesn’t need heavy smoke like hickory or mesquite to shine
- Instant-read or leave-in meat thermometer — non-negotiable for a cut this lean and this easy to overcook
How to Smoke Pork Tenderloin on a Pellet Grill
Trim and Season
Rinse the tenderloins and pat them dry. Run a sharp knife along the silver skin (the shiny, tough membrane on one side) and remove it — it won’t render and will make finished slices chewy. Coat the tenderloins with your binder, then apply the rub evenly on all sides, or let them marinate for 2-3 hours in the fridge if you’re using a wet marinade.
Set Up the Pellet Grill
Preheat your pellet grill to 225°F with the lid closed for about 15 minutes. If your grill has a low-and-slow “smoke” setting, use it here — tenderloin cooks fast enough that you want as much smoke exposure as you can get in the time available.
Smoke to Temperature
Place the tenderloins directly on the grate. Insert a thermometer probe into the thickest part of one tenderloin. Close the lid and smoke until the internal temperature reads 145°F — expect roughly 1 to 1.5 hours for tenderloins in the 1 to 1.5 pound range. If you’re brushing on barbecue sauce, add it during the last 10-15 minutes so it caramelizes instead of burning.
Rest and Slice
Pull the tenderloins at 145°F, tent them loosely with foil, and let them rest for 5-10 minutes. Carryover heat will finish the job while the juices redistribute. Slice into half-inch medallions against the grain.
How Long to Smoke Pork Tenderloin at 225°F?
| Tenderloin size | Approximate time at 225°F |
|---|---|
| 1 lb | 1 to 1.25 hours |
| 1.5 lbs | 1.25 to 1.5 hours |
| 2 lbs | 1.5 to 2 hours |
These are starting points, not guarantees — smoker airflow, outside temperature, and how cold the meat was going in all shift the actual time. Always pull based on internal temperature (145°F), not the clock.
Should You Smoke at 225°F or 250°F?
Either works, and the difference is smaller than it sounds for a cut this thin. At 225°F you get a slightly longer cook and marginally more smoke absorption, which suits people who like a stronger smoke flavor and don’t mind the extra 15-20 minutes. At 250°F the tenderloins cook a bit faster with a slightly firmer exterior, which is useful if you’re timing the cook around side dishes.
What matters far more than 225°F vs. 250°F is pulling at the right internal temperature. Either setting will produce a dry tenderloin if you cook past 145-150°F, and either will produce a juicy one if you don’t.
Do You Wrap Pork Tenderloin When Smoking?
No — tenderloin doesn’t need a foil wrap. Wrapping (the “Texas crutch”) exists to push through the stall on big, tough cuts like pork butt or brisket, where you’re rendering hours of connective tissue. Tenderloin has almost no connective tissue and cooks in under two hours; wrapping it would just steam away the bark you’re trying to build and add a step that does nothing useful here. Save the wrap for our hot and fast pulled pork method, where it actually matters.
How to Keep Pork Tenderloin From Drying Out
This is the single most common mistake with this cut, and it almost always comes down to one thing: cooking too long or too hot past 145°F. A few habits fix it:
- Use a thermometer, not a timer. Pull the meat at 145°F internal every time — USDA’s minimum safe temperature for whole cuts of pork — and stop there. A few extra minutes on a cut this thin is the difference between juicy and dry.
- Don’t confuse loin and tenderloin. A pork loin roast is thicker and more forgiving; a tenderloin is thin and punishes overcooking fast.
- Rest before slicing. Cutting into it immediately lets the juices run out onto the cutting board instead of staying in the meat.
- Keep a light coat of oil or marinade on it. It won’t stop overcooking, but it does help the exterior from drying out under direct smoker heat before the interior catches up.
Flavor Variations
- Spicy rub — add cayenne or crushed red pepper flakes to your dry rub
- Sweet glaze — brush with a brown sugar and bourbon or maple glaze in the last 10 minutes
- Herb marinade — swap the dry rub for a honey, thyme, and apple juice marinade for a milder, slightly sweet profile
- Sauced — finish with your favorite barbecue sauce brushed on during the last 10-15 minutes so it sets rather than burns
Other Pork Cuts Worth Smoking
Tenderloin is a great weeknight option, but it’s just one of several pork cuts worth putting on the smoker or grill. If you’re feeding a crowd or want something different next time, check out:
- Smoking pork steaks at 250°F — a cheaper, more forgiving cut with more fat to render
- Pork loin on a pellet grill at 300°F — a larger roast, faster cook, great for a bigger group
- Smoked bone-in pork loin on a Traeger — a bone-in roast you carve tableside
- Tomahawk pork chop grill time — a thick, bone-in chop cooked hot and fast on the grill
- Hot and fast smoked pulled pork — a full pork butt, shredded, in about 5 hours instead of overnight
FAQ
What temperature should I pull pork tenderloin off the smoker? 145°F internal, then rest 5-10 minutes. That’s the USDA minimum safe temperature for whole cuts of pork, and it’s also where tenderloin is at its juiciest — going higher dries it out fast.
How many people does one tenderloin feed? A 1 to 1.5 pound tenderloin serves about 2-3 people as a main. Most packages come with two, which comfortably feeds 4-6.
Can I smoke pork tenderloin from frozen? Thaw it first. A frozen tenderloin will cook unevenly on the outside before the center comes up to temperature, and it won’t take smoke or rub as well.
What’s the best wood for pork tenderloin? Apple, cherry, or maple. These fruitwoods give a mild, slightly sweet smoke that complements pork without overpowering a cut this lean.