There are
2,677 mi
from Lake Forest, CA to Hyattsville, MD
That's the driving distance. It would take 1 day 23 hours to go from Lake Forest, California to Hyattsville, Maryland.
The flight distance (direct flight from Lake Forest, CA to Hyattsville, MD) is 2,279.01 mi.
2,677 mi = 4,307.41 kms