The great-circle (straight-line) distance between Memphis, TN (MEM) and Salt Lake City, UT (SLC) is approximately 1,200 miles (1,931 km).
1,450 miles / 21–22 hours via I-40 W → I-25 N → I-80 W (Little Rock → OKC → Amarillo → Denver → SLC). Scenic but grueling solo.
Memphis (Central) → Salt Lake City (Mountain) = 1 hour behind. Depart 8 AM CT → arrive ~10:45 AM MT (nonstop).