There are
3,026 mi
from Somerville, MA to Sammamish, WA
That's the driving distance. It would take 2 days 6 hours to go from Somerville, Massachusetts to Sammamish, Washington.
The flight distance (direct flight from Somerville, MA to Sammamish, WA) is 2,470.83 mi.
3,026 mi = 4.83 kms