The Cockburn Channel is a channel that separates the Brecknock Peninsula, which is the westernmost projection of the Isla Grande de Tierra del Fuego, from Clarence Island, Capitán Aracena Island and other minor islands in Chile. It is located at 54°20′S 71°30′W and extends 40 miles (64 km) east from the open Pacific Ocean to Magdalena Channel. The channel is part of a major waterway connecting the Strait of Magellan to the Beagle Channel: Magdalena Channel, Cockburn Channel, Brednock Pass, Ballenero Channel, Beagle Channel.