There are
2,975 mi
from Pasadena, CA to Waltham, MA
That's the driving distance. It would take 2 days 5 hours to go from Pasadena, California to Waltham, Massachusetts.
The flight distance (direct flight from Pasadena, CA to Waltham, MA) is 2,573.77 mi.
2,975 mi = 3.22 kms