Trail Highlights: | Lake views; mountain views; fungi |
Round-trip Distance: | 7.00 miles / 11.30 km |
Location: | Wild Sky Wilderness, Henry M. Jackson Wilderness, and Mt. Baker-Snoqualmie National Forest, Stevens Pass / Skykomish Valley, Washington North Cascades Ancestral lands of the Skykomish |
Directions: | |
Required Pass: | Northwest Forest Pass or equivalent for U.S. Forest Service sites |
Additional Trail Info: | Washington Trails Association U.S. Forest Service |

In noonday sun, Blanca Lake shimmers in its signature turquoise hue.
Blanca Lake Trail, August 07, 2015.
The rugged climb to Blanca Lake rewards with shoreline views of one of the Cascades’ most distinctively hued lakes. The lake derives its unusually opaque, yet jewel-like color from “rock flour,” or, glacial till – fine, mineral-rich sediment ground from stone by the Columbia Glacier in the mountain hollow just above the lake and mingled with its runoff. Although Blanca Lake displays its most intense color in bright sunlight, its shade shifts with variations in light and ranges from nearly iridescent turquoise to luminous jade. The trail to the lake climbs steeply through heavy forest for approximately 3.00 miles/4.80 km before levelling across a short ridge and then descending just as sharply over the next 0.50 miles/0.80 km to the lake basin. Along the ridge, brief views open to secluded meadows and surrounding mountains, including Glacier Peak, one of Washington’s five active volcanoes. Although few wildflowers grace the shadowy woodland along the trail, an array of unusual autumn fungi takes their place.
Understandably, Blanca Lake is a popular summer and autumn destination − expect to enjoy it with others and consider visiting on a less crowded weekday. Heavy use has eroded the trail to slick roots and rocks in many sections of its already steep grade − appropriate footwear is required and those who prefer trekking poles will find them especially useful here.

The trail’s first 1.00 mile/1.60 km wends through dense second-growth forest littered with deadfalls and yet to recover the layered middle- and understory plant life characteristic of mature woodland.
Blanca Lake Trail, September 25, 2016.

After approximately 1.00 mile/1.60 km, the trail enters the Wild Sky Wilderness and veers upward through more mature forest in rugged, root-writhen switchbacks.
Blanca Lake Trail, September 25, 2016.

The forest’s deep shade and damp litter foster an abundance of unusual fungi, including various mushrooms, wood conks, and coral fungi. Blanca Lake Trail, September 25, 2016.

After approximately 3.00 miles/4.80 km of consistent climbing, the trail traverses a short, relatively level ridgeline, where expansive views begin to unfurl. Here, a trailside meadow basks in sun’s last glow. Blanca Lake Trail, September 25, 2016.

As the trail nears Blanca Lake, Monte Cristo and Kyes peaks rear atop the horizon. Still out of sight, the lake pools at their feet below the Columbia Glacier at the lower left of this photo.
Blanca Lake Trail, September 25, 2016.

Here and there, parted boughs reveal glimpses of Glacier Peak, Washington’s “forgotten” volcano. Less visible than others and lacking the honorific abbreviation “Mt.” often accorded to volcanic peaks, Glacier Peak is nevertheless known to have erupted within the last 400 years.
Blanca Lake Trail, September 25, 2016.

Near Virgin “Lake” – actually more a murky pond – the trail crosses into the Henry M. Jackson Wilderness and begins its steep descent to Blanca Lake.
Blanca Lake Trail, September 25, 2016.

As the trail swiftly descends the lake basin, rugged walls rise round about.
Blanca Lake Trail, August 07, 2015.

Blanca Lake nearly glows beneath Columbia, Monte Cristo, and Kyes peaks. Columbia Glacier’s leading edge is visible in the cleft between the peaks. Blanca Lake Trail, August 07, 2015.

At the trail’s end, a raft of sun-bleached logs lodges at the lake’s outlet to Troublesome Creek.
Blanca Lake Trail, August 07, 2015.