There are
920 mi
from Lewisville, TX to New Ulm, MN
That's the driving distance. It would take 16 hours 47 mins to go from Lewisville, Texas to New Ulm, Minnesota.
The flight distance (direct flight from Lewisville, TX to New Ulm, MN) is 790.36 mi.
920 mi = 1,480.98 kms