How to Smoke Pork Loin Roast
Pork · Smoking
A lean roast; smoke to 145°F and rest to keep it moist and sliceable.
250°F smoker 145°F internal Rest 15 min
How long to smoke Pork Loin Roast
Smoke at 250°F for roughly 35 minutes per pound, until the internal temperature reaches 145°F. Then rest 15 minutes.
| Weight | Smoker temp | Estimated time |
|---|---|---|
| 2 lb | 250°F | 1 hr 10 min |
| 4 lb | 250°F | 2 hrs 20 min |
| 6 lb | 250°F | 3 hrs 30 min |
Smoking times vary with weather, your smoker and the stall — always cook to temperature, not the clock.
Frequently asked questions
How long does it take to smoke pork loin roast?
At 250°F, plan 35 minutes per pound — about 2 hrs 20 min for a 4 lb pork loin roast at 250°F. Cook until it reaches 145°F internal.
What temperature do you smoke pork loin roast at?
A smoker temperature of 250°F works well, pulling the meat at an internal temp of 145°F.
What internal temp for pork loin roast?
Target 145°F internal for pork loin roast.
Tips for better Pork Loin Roast
- Rest it. Let pork loin roast rest 15 minutes after cooking so the juices redistribute before you slice.
- Use a thermometer, not the clock. Grills have hot and cold spots — pull at 145°F internal.
- Ride out the stall. The internal temperature can pause for an hour or more; wrap in foil or butcher paper to push through it.
Sources and method
- USDA safe internal temperatures
- ThermoWorks temperature guide
- AmazingRibs grilling and smoking science
Times are tested estimates cross-checked against USDA guidance; always cook to internal temperature, not the clock. Last verified: 2026-07-17.
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