... Remote observing has long been a part of the Keck Observatory operating plan. ... Remote observing from the Keck HQ now encompasses over 95% of observing runs at the Keck Observatory. Recently, additional efforts have been made to enable remote observing on the Keck Telescopes from the U.S. mainland. ... In this paper, we present a brief summary of the Keck remote observing efforts from the U.S. mainland, with an emphasis on the system at Caltech, which is the most recent to come on-line. ...