Bandera Mountain, Mountain peak in King County, Washington, United States.

Bandera Mountain is a mountain near Snoqualmie Pass in Washington's Alpine Lakes Wilderness, in King County. The Mason Lake Trail, also called the Ira Spring Memorial Trail, starts from Forest Road 9031 off I-90 at Exit 45 and climbs the mountain. Runoff from its slopes drains into the Snoqualmie River.

Bandera Mountain lies in the Alpine Lakes Wilderness near Snoqualmie Pass. The Mason Lake Trail, also called the Ira Spring Memorial Trail, starts from Forest Road 9031 off I-90 at Exit 45. Runoff from the mountain drains into the Snoqualmie River, and its west side receives heavy snowfall in winter.

The mountain trail system forms an integral part of Washington State's outdoor recreation network, connecting hikers to multiple wilderness paths.

The route follows the Mason Lake Trail (Ira Spring Memorial Trail), reached from I-90 at Exit 45 via Forest Road 9031. The trailhead sits near Snoqualmie Pass in the Alpine Lakes Wilderness, where winter brings heavy snowfall and cloudy weather, while summer often stays clear. Runoff from the mountain drains into the Snoqualmie River.

The trail first reaches a false summit before continuing to the actual peak hidden within the forest. This surprise makes the hike longer than many expect and catches visitors off guard.