From Washington Union Station Amtrak train to Baltimore then Amtrak Thruway to Ocean City, MD. 4 h 36 min. From Washington bus to Del Rt 1 & Ruddertown, line 208 bus to 144th Street Transit Station, then bus to Coastal Hwy between 4th and 3rd Street. 4 h 40 min $43. From Washington drive to Ocean City. 2 h 57 min $16.