The Sand Mountain Field is part of the Cascade volcanic arc and is located at the western edge of the High Cascades segment of the central Oregon Cascades, near the upper McKenzie River watershed in Oregon, in the United States. It encompasses an area of and has a maximum elevation of . Located within the Willamette National Forest in the McKenzie Ranger District near Santiam Pass, the Sand Mountain Volcanic Field is southwest of Mount Jefferson and northwest of Belknap Crater and Mount Washington.