4.8
(5099)
15,957
hikers
06:46
21.9km
770m
Hiking
Hike the difficult 13.6-mile Boulder Lake Trail in Snohomish County, Washington, gaining 2522 feet to a stunning alpine lake.
Last updated: February 26, 2026
Tips
Your route passes through protected areas
Please check local regulations for:
Morning Star Natural Resources Conservation Area
Henry M. Jackson Hydroelectric Project
Waypoints
Start point
Parking
Get Directions
10.9 km
Highlight • Lake
Tip by
21.9 km
End point
Parking
Way Types & Surfaces
Way Types
21.9 km
< 100 m
Surfaces
21.9 km
< 100 m
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Elevation
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Weather
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Today
Tuesday 7 July
21°C
11°C
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Additional weather tips
Max wind speed: 10.0 km/h
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This route was planned by komoot.
The full Komoot route for the Boulder Lake Trail is approximately 21.9 kilometers (13.6 miles) long and typically takes around 6 hours and 45 minutes to complete. This duration can vary based on your pace, breaks, and the challenging terrain.
The terrain is quite varied and challenging. You'll start on a well-beaten path through second-growth trees, but it quickly becomes steep with tree roots making for tricky, often muddy, footing. The trail can be narrow, and in some places, the tread might disappear entirely, requiring route-finding skills. Expect immense avalanche slopes littered with class 2 boulder fields that require scrambling.
This trail offers stunning scenery, including lush ferns, dense forests, and glimpses of Boulder Lake through the trees as you approach. You'll encounter rugged peaks, seasonal wildflowers like lupine and columbine, picturesque rushing falls, and swimming holes along Boulder Creek. The lake itself is an azure gem set within a cirque of metamorphic cliffs.
No, this trail is rated as difficult. It requires perseverance due to steep terrain, potentially disappearing trail tread, and a final class 2 boulder field scramble. It's not considered a 'walk in the park' and is best suited for experienced hikers.
The best time to hike this trail is typically during the warmer months when snow has melted and seasonal wildflowers are in bloom. Wildflowers like lupine, Indian paintbrush, and columbine are particularly vibrant. Always check current trail conditions before heading out, as snow can linger at higher elevations.
Specific regulations regarding dogs on this particular Boulder Lake Trail in Snohomish County, Washington, are not detailed. It's always best to check with the local land management authority for the Morning Star Natural Resources Conservation Area before bringing your dog to ensure compliance with any leash laws or restrictions.
The Boulder Lake Trail is located within the Morning Star Natural Resources Conservation Area. While specific permit or fee requirements for this exact trail are not provided, it's common for conservation areas to have parking passes or permits. Always check the official website for the Morning Star Natural Resources Conservation Area or nps.gov for the most up-to-date information on fees and permits before your visit.
The area is known to have wildlife, including black bears. It is highly recommended to carry bear spray and know how to use it. If you plan on camping, bear canisters are required for food storage to protect both your food and the wildlife.
Yes, the route also passes through sections of the Greider Lakes Trail and the Greider/Boulder Lakes Trail, which are official trails in the area.
Information regarding specific parking facilities for this Boulder Lake Trail is not detailed. Hikers should plan to research trailhead access and parking availability in advance, especially for popular hiking destinations, as parking can sometimes be limited or require a specific pass.
Given the trail's difficulty, steep terrain, and potential for disappearing tread, strong route-finding skills are essential. Be prepared for muddy conditions and boulder scrambling. As black bears are present, carrying bear spray is advised. Always inform someone of your hiking plans and expected return time.
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