There are
2,676 mi
from Downey, CA to Takoma Park, MD
That's the driving distance. It would take 1 day 23 hours to go from Downey, California to Takoma Park, Maryland.
The flight distance (direct flight from Downey, CA to Takoma Park, MD) is 2,292.11 mi.
2,676 mi = 4,306.40 kms