There are
2,920 mi
from Waterbury, CT to Mountlake Terrace, WA
That's the driving distance. It would take 2 days 4 hours to go from Waterbury, Connecticut to Mountlake Terrace, Washington.
The flight distance (direct flight from Waterbury, CT to Mountlake Terrace, WA) is 2,416.08 mi.
2,920 mi = 4,698.48 kms