There are
2,998 mi
from Walnut Creek, CA to Holyoke, MA
That's the driving distance. It would take 2 days 5 hours to go from Walnut Creek, California to Holyoke, Massachusetts.
The flight distance (direct flight from Walnut Creek, CA to Holyoke, MA) is 2,595.25 mi.
2,998 mi = 4,825.57 kms