There are
2,539 mi
from Waltham, MA to Twin Falls, ID
That's the driving distance. It would take 1 day 21 hours to go from Waltham, Massachusetts to Twin Falls, Idaho.
The flight distance (direct flight from Waltham, MA to Twin Falls, ID) is 2,178.55 mi.
2,539 mi = 4,086.48 kms