2.6
(19)
25
hikers
02:11
6.32km
340m
Hiking
Hike the moderate 3.9-mile Pinnacle Lake Trail through old-growth forest to a serene alpine lake with views of Mount Pilchuck.
Last updated: February 26, 2026
Tips
Your route passes through a protected area
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Waypoints
Start point
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480 m
Highlight • Lake
3.33 km
Highlight • Lake
Tip by
6.32 km
End point
Way Types & Surfaces
Way Types
6.30 km
Surfaces
6.30 km
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Elevation
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Weather
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Monday 25 May
16°C
7°C
90 %
Additional weather tips
Max wind speed: 14.0 km/h
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This route was planned by komoot.
The trail is approximately 3.9 miles (6.3 km) roundtrip with about 1,117 feet (340 m) of elevation gain. While komoot estimates a duration of around 2 hours and 11 minutes, many hikers find it takes longer due to the challenging terrain. Plan for 3-4 hours, especially if you want to enjoy the scenery at Pinnacle Lake and Bear Lake.
The terrain is quite rugged. Expect very rocky, rooted, and often muddy paths, especially after rain. There are steep sections, and you might find yourself walking through small streams. The trail begins on good tread but quickly transitions to a more difficult surface, traversing old-growth forest before ascending to subalpine areas. Trekking poles are highly recommended for stability, particularly on the descent.
This trail is generally rated as moderate to difficult and is not recommended for young children or first-time hikers. Its rocky, rooted, and steep sections demand good fitness and sure-footedness. It's best suited for hikers with some experience looking for a challenging workout.
You'll encounter diverse scenery, starting with impressive old-growth forest featuring massive cedars and Douglas firs. The trail passes by scenic Bear Lake. As you climb, gaps in the forest offer views of peaks like Three Fingers, Liberty, Mount Baker, and Glacier Peak. The destination, Pinnacle Lake, is a quiet alpine lake nestled beneath Mount Pilchuck's spires, offering a unique east-side perspective. The upper reaches also feature small ponds and subalpine meadows.
The best time to hike is typically from late spring through early fall. Early in the season (late spring/early summer), you might still encounter snow near Pinnacle Lake, which can make navigation tricky. Late summer is particularly delightful for berry picking in the subalpine meadows. Always check weather and trail conditions before you go.
The trail starts from a trailhead accessible via National Forest Development Road 4021. Be aware that this access road is notoriously rough and full of potholes, often requiring a high-clearance vehicle. Parking is available at the trailhead, but it can fill up quickly on busy days. Arriving early is advisable.
Yes, the Pinnacle Lake Trail is located within the Mount Baker-Snoqualmie National Forest. A valid recreation pass, such as the Northwest Forest Pass, America the Beautiful Pass, or a day-use fee, is required to park at the trailhead. Be sure to display your pass clearly.
Yes, dogs are generally allowed on the Pinnacle Lake Trail. However, they must be kept on a leash at all times to protect wildlife and ensure a pleasant experience for all hikers. Please remember to pack out all pet waste.
Yes, the route follows the official Pinnacle Lake Trail (100%) and also includes sections of the Bear Lake Trail (25%). You'll also be on parts of Pinnacle Lake Trail #703 (99%) and Bear Lake Trail #661 (25%). The access road is Forest Road 4021 (20%). This trail can also serve as part of a more extensive traverse to the Mount Pilchuck Lookout.
Given the challenging and often muddy terrain, especially after rain, consider bringing waterproof hiking boots and trekking poles. The last quarter-mile near Pinnacle Lake can retain snow well into the early season, so be prepared for varied conditions. Also, the access road is rough, so a high-clearance vehicle is highly recommended to reach the trailhead comfortably.
There are no direct amenities like restrooms or water sources at the trailhead itself. It's essential to pack in all your water and snacks. For services like cafes, pubs, or accommodation, you would need to drive to nearby towns such as Granite Falls, which is located off the Mountain Loop Highway.