How do you get from ronkonkoma ny to cadman plaza Brooklyn ny by train?

To get from Ronkonkoma, NY, to Cadman Plaza in Brooklyn by train, take the Long Island Rail Road (LIRR) from Ronkonkoma Station to Penn Station in Manhattan. From Penn Station, transfer to the subway and take the 2, 3, 4, or 5 train to Borough Hall or the A or C train to Jay St-MetroTech. Cadman Plaza is a short walk from either subway station. Be sure to check the LIRR schedule for any service changes.