Olympic National Park backcountry pass required for all overnight travel.
Be prepared for rain/wet weather no matter the time of year. Blue Glacier can become extremely hard later in the season.
Travel out the Hoh River Trail to Glacier Meadows for 17.5 miles. Reach the Blue Glacier by following either the Terminus Primitive Trail or the Blue Glacier Primitive Trail to the glacier's lateral moraine. Cross the Blue Glacier and ascend to the top of Snow Dome. Gradually ascend from Snow Dome to Crystal Pass. Ascend the false summit then descent to climb the final steep snow slope to below the summit block. The summit can be obtained through a variety of 5.4-5.6 trad climbs or by scrambling loose rock around the back.