Big Bear Mountain, Mountain summit in Snohomish County, United States.

Big Bear Mountain is a peak in the Cascade Range that rises to 1720 meters (5640 feet). The summit sits above dense forest terrain with steep slopes marking the terrain throughout the climb.

Big Bear Mountain lies in the Boulder River Wilderness, on land administered by the Mount Baker-Snoqualmie National Forest in Snohomish County. The North Cascades around it took shape over millions of years: volcanic activity as the North American Plate overrode the Pacific Plate, then terranes that assembled the range about 50 million years ago. Pleistocene glaciers scoured the valleys, leaving the U-shaped cross sections and rock debris seen today.

The name Big Bear Mountain appears on maps of the Boulder River Wilderness, and the summit is a destination for climbers working through the peaks between Three Fingers and Liberty Mountain. The Sauk and Stillaguamish drainages below carry the runoff, and the wet, heavy snow of the west-side climate shapes when parties can go.

The climb demands good fitness and appropriate gear before starting. Visitors should plan for a full day of hiking and bring plenty of water and sturdy footwear.

Runoff from Big Bear Mountain does not reach the Skagit: it drains into tributaries of the Sauk and Stillaguamish Rivers. The summit stands at 5,641 feet (1,719 m) in the Boulder River Wilderness, midway between Three Fingers to the north and Liberty Mountain to the south, on land managed by the Mount Baker-Snoqualmie National Forest.