Mount Carmack is a prominent 6,808-foot-elevation (2,075-meter) mountain summit located in the Boundary Ranges of the Coast Mountains, in the U.S. state of Alaska. The peak is situated 7 mi (11 km) north-northeast of Skagway, and 3.5 mi (6 km) south of Mount Cleveland, on land managed by Tongass National Forest. As the highpoint on the divide between the Taiya River and the Skagway River, precipitation runoff from the mountain drains east into the Skagway River and west into Taiya River, both of which empty into Taiya Inlet. Although modest in elevation, relief is significant since Mount Carmack rises 6,800 feet above the Taiya valley in less than 2 mi (3 km), and 5,800 feet above Skagway valley in about 2 miles. Mount Carmack has a lower subsidiary summit, elevation 6,621 ft (2,020 m), about 0.5 mi (1 km) to the northeast of the true summit. The USGS topographic map has this lower northeast peak labelled as Mount Carmack.