Miles SinclairBy Miles Sinclair

Updated November 2026

Grilling pork tenderloin on a gas grill gives you a juicy, lightly charred cut in about 25 to 30 minutes. The method is simple: set up two heat zones, sear the outside over direct heat, then finish over indirect heat until the center reaches 145°F. Pull it, rest it, and slice.

Prep the Tenderloin and Season It

Pork tenderloin is lean, so it benefits from a little moisture and salt before it hits the grates. Trim any silver skin and the thin fat cap if it looks loose. Pat the meat dry, then coat it with a thin layer of olive oil or yellow mustard so the seasoning sticks.

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Apply a salt-forward rub at roughly 1 teaspoon of kosher salt per pound, plus pepper, garlic powder, and smoked paprika if you like color and flavor. Let it sit at room temperature for 20 to 30 minutes while the grill heats. For more seasoning ideas, see our guide to Grilling Ribs on a Gas Grill: A Step-by-Step Guide for Tender Results, which covers rub technique that transfers well to pork.

Set Up Two Heat Zones on Your Gas Grill

Preheat all burners to high with the lid closed for 10 to 15 minutes. Then turn one side off or down to low, leaving the other side on medium-high. Your direct zone should sit around 450°F to 500°F, and your indirect zone should be near 350°F. Clean the grates with a brush while they heat, and oil them lightly to prevent sticking.

If your grill has a built-in thermometer, use it as a guide only. Place an independent grill thermometer near the meat for a more accurate reading. For background on how different grills manage heat, the overview Types of BBQ Grills: Charcoal, Gas, Pellet and Electric Explained is a useful reference.

Sear, Move Indirect, and Cook to 145°F

Place the tenderloin over the direct side and sear each side for 2 to 3 minutes until it has browned marks. Move it to the indirect side, close the lid, and cook. Total cook time typically runs 18 to 25 minutes, depending on the size of the tenderloin and how steady your grill holds temperature.

Pull the meat when the thickest part reads 145°F on an instant-read thermometer. The USDA lists 145°F as the safe minimum for whole cuts of pork, followed by a 3-minute rest. Pork that reaches this temperature stays pink in the center and remains juicy. Do not chase a higher number; this lean cut dries out fast past 150°F.

Rest and Slice

Transfer the tenderloin to a cutting board and rest it for 5 to 10 minutes, tented loosely with foil. Slice into 3/4-inch medallions against the grain. Juices will redistribute during the rest, so skip the urge to cut right away.

Checklist for Grilling Pork Tenderloin on a Gas Grill

  1. One pork tenderloin, about 1 to 1.5 pounds, trimmed
  2. Olive oil or yellow mustard as a binder
  3. Salt, pepper, and your preferred rub
  4. Clean, oiled grill grates
  5. Instant-read thermometer
  6. Foil for tenting and a cutting board for resting

Common Mistakes to Avoid

  • Skipping the two-zone setup, which leads to a burnt outside and raw center.
  • Cooking by time alone instead of checking internal temperature.
  • Pulling the meat past 150°F, which makes it dry and chalky.
  • Slicing immediately, which lets juices run out onto the board.
  • Using cold grates, which causes sticking and uneven marks.

A reliable instant-read thermometer is the single most useful tool for this cook, since it removes the guesswork around 145°F. Search for View on Amazon.

A stiff grill brush keeps grates clean and reduces sticking on lean proteins. Look for View on Amazon.

A long-handled tong set helps you flip and move the tenderloin without piercing it, which would let juices escape. Browse View on Amazon.

FAQ

Should I grill pork tenderloin with the lid open or closed?

Keep the lid closed for most of the cook. Open it only for searing and flipping, since a closed lid holds heat evenly and keeps the indirect zone steady.

How long does pork tenderloin take on a gas grill?

Expect about 20 to 30 minutes total, including the sear. Thickness and grill temperature affect timing, so rely on an internal reading of 145°F rather than the clock.

Can I grill pork tenderloin without a thermometer?

You can, but it is risky with a lean cut. A thermometer is the only reliable way to confirm doneness, and a meat thermometer is a worthwhile purchase for any grilling routine. Consult a food safety resource if you have questions about specific health concerns.

Conclusion

Grilling pork tenderloin on a gas grill comes down to two-zone heat, a quick sear, and pulling the meat at 145°F. Rest it, slice it, and you will get juicy results with minimal effort. Once you have the method down, try varying the rub to match your favorite flavors.

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Miles Sinclair

About Miles Sinclair

Miles Sinclair is part of our editorial team and reviews and edits our BBQ & grilling guides, checking product details against manufacturer specifications and owner feedback.