There are
2,632 mi
from Pittsburg, CA to Niagara Falls, NY
That's the driving distance. It would take 1 day 22 hours to go from Pittsburg, California to Niagara Falls, New York.
The flight distance (direct flight from Pittsburg, CA to Niagara Falls, NY) is 2,251.28 mi.
2,632 mi = 4,235.25 kms