[1] Download coordinates as: The Guest Peninsula extends westward into the Pacific Ocean from the Fosdick Mountains of the Ford Ranges in Marie Byrd Land.

Features in the southeast of the peninsula include Mackey Rock, the Chester Mountains, Neptune Nunataks and Mount Corey.

Group of peaks 3 nautical miles (5.6 km; 3.5 mi) west of Mount Iphigene, on the south side of Block Bay.

Named by Byrd for Frederick T. Birchall, member of the staff of the New York Times which published the expedition's press dispatches.

Named by US-ACAN for Robert Z. Maigetter, biologist with the USARP Marie Byrd Land Survey II, 1967-68.

Photographed from the air and roughly plotted by the ByrdAE, 1928-30, but mapped definitively by the United States Antarctic Service (USAS), 1939–41.

Named by US-ACAN for H. Myron Swarm, USARP ionospheric physicist at Byrd Station in the 1966-67 season.

An isolated rock on the east side of Sulzberger Ice Shelf, 8 nautical miles (15 km; 9.2 mi) southwest of Mount Iphigene.

Named by US-ACAN for Steven Mackey, field assistant with the USARP Marie Byrd Land Survey II, summer 1967-68.

Mapped by the ByrdAE (1933-35) and named for Colby Mitchell Chester, president of General Foods Corporation, who gave generous support to the Byrd expeditions.

Named by US-ACAN for Gary D. Neptune, geologist with the Marie Byrd Land Survey II, 1967-68 season.