There are
2,596 mi
from Pendleton, OR to Hyattsville, MD
That's the driving distance. It would take 1 day 21 hours to go from Pendleton, Oregon to Hyattsville, Maryland.
The flight distance (direct flight from Pendleton, OR to Hyattsville, MD) is 2,161.85 mi.
2,596 mi = 4,177.48 kms