There are
2,858 mi
from Fountain Valley, CA to Pittsfield, MA
That's the driving distance. It would take 2 days 3 hours to go from Fountain Valley, California to Pittsfield, Massachusetts.
The flight distance (direct flight from Fountain Valley, CA to Pittsfield, MA) is 2,475.27 mi.
2,858 mi = 4,600.12 kms