Sourdough Mountain

Sourdough Mountain doesn't ease you into anything. From the first step, the trail climbs relentlessly through dense forest, gaining nearly a vertical mile over five punishing miles. The old fire lookout trail switchbacks through Douglas fir and cedar before breaking into subalpine meadows where the real show begins — Diablo Lake glows an almost unnatural turquoise far below, ringed by jagged North Cascades peaks still holding snow well into summer. The final push to the old lookout site at 5,985 feet delivers a panorama that stretches from Ross Lake to Colonial Peak and beyond. This is not a casual afternoon stroll; it's a full-day commitment that rewards strong legs and stubborn determination. Hikers who love earning their views the hard way will find this trail deeply satisfying.