There are
1,685 mi
from Lewisville, TX to Menlo Park, CA
That's the driving distance. It would take 1 day 5 hours to go from Lewisville, Texas to Menlo Park, California.
The flight distance (direct flight from Lewisville, TX to Menlo Park, CA) is 1,448.84 mi.
1,685 mi = 2,711.37 kms