Big Heart Lake via West Fork Foss Lakes Trail #1064

Explore the Foss Lake Basin on this hike through a series of stunning alpine lakes.
Total Distance: 14.6 miles
Total Ascent: 3600ft (3300ft in; 300ft out)
Highest Point: 4900ft
Difficulty: Hard
Our Hiking Time: 8h 30m
Required Permit: Northwest Forest Pass
To get there, take Highway 2 out past Skykomish just beyond milepost 50. Take a right onto FR 68, also known as the Foss River Road. Continue on the road for 4.7 miles (the road becomes gravel after about a mile) to a junction with FR 6840. Veer left and follow FR 6840 for just under two miles to the end of the road and the West Fork trailhead. View Google Directions >>
From the trailhead, the West Fork Foss Lakes Trail #1064 enters a mixed forest. At roughly a half-mile cross a sturdy bridge and continue climbing through deepening forest for another mile to Trout Lake. From here, the trail becomes steeper and rockier. Continue pushing up past the junction to Malachite Lake, over a bridge crossing the top of a waterfall and then across a series of stepping stones to eventually arrive at Copper Lake at just under the 4 mile mark.

Continue along the shore of Copper Lake following the trail as it turns upward again. After another mile and few hundred feet of elevation, arrive at Little Heart Lake nestled at the bottom of a rocky cirque. Push on to Big Heart Lake on what is the most challenging portion of the route. After a little over a mile of climbing, the trail crosses over the ridge and begins quickly switchbacking down toward the lakeshore. Suddenly the trees pull away and Big Heart Lake lies sparkling before you, its shores a tangle of grey rock, bleached driftwood, vibrant evergreens and snowy ridgelines. Settle in to enjoy the view.

If you’re up for a little exploring, Angeline Lake, Azurite Lake, and Chetwoot Lake can all be found beyond Big Heart Lake by following bootpaths or just doing a little bushwhacking. If you’re looking for solitude, we recommend looking there.

There's a lot more to Big Heart Lake, and you can learn all about it in Alpine Lakes Wilderness: The Complete Hiking Guide. You'll find a trail map, route descriptions, history, and more for this and many other hikes throughout the State. Help support hikingwithmybrother.com and the work we do by picking up a copy!