How to Grill Rack of Lamb
Lamb · Grilling
Grill two-zone to an even medium-rare, then sear the fat cap for a crust.
425°F grill 130°F internal Rest 8 min
How long to grill Rack of Lamb
Grill at 425°F for about 6 minutes per side (at 1.5" thick), to an internal temp of 130°F. Rest 8 min.
| Doneness | Internal temp | Time per side |
|---|---|---|
| Rare | 125°F | 4.3 min/side |
| Medium-rare | 135°F | 5.1 min/side |
| Medium | 145°F | 6.0 min/side |
| Medium-well | 150°F | 6.9 min/side |
| Well-done | 160°F | 7.9 min/side |
Thicker cuts need longer; use the calculator to adjust for thickness.
Frequently asked questions
How long to grill rack of lamb?
Grill rack of lamb about 6 minutes per side at 425°F, until it reaches 130°F internal.
What temperature to grill rack of lamb?
Set up the grill for about 425°F at the grate.
What internal temp for rack of lamb?
Cook rack of lamb to 130°F internal for medium-rare; see the doneness chart for other levels.
Tips for better Rack of Lamb
- Rest it. Let rack of lamb rest 8 minutes after cooking so the juices redistribute before you slice.
- Slice across the grain. Find the direction of the muscle fibers and cut perpendicular to them for a tender bite.
- Use a thermometer, not the clock. Grills have hot and cold spots — pull at 130°F internal.
- Don't flip too early. Let a crust form so the cut releases cleanly before you turn 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.