Red Mountain is a mountain summit located in King County of Washington state. It is set within the Alpine Lakes Wilderness which is part of the Cascade Range. Red Mountain is situated three miles north of Snoqualmie Pass on land managed by Mount Baker-Snoqualmie National Forest. The nearest higher neighbor is Lundin Peak, to the northwest. Precipitation runoff on the north side of the mountain drains into Middle Fork of the Snoqualmie River, whereas the south side of the mountain drains into the South Fork Snoqualmie River via Commonwealth Creek.