4.9
(1549)
12,141
hikers
02:34
5.79km
710m
Hiking
Hike the challenging 3.6-mile Lake Isabel Trail in Washington's Wild Sky Wilderness, gaining 2321 feet to a serene, remote lake.
Last updated: February 26, 2026
Tips
Your route passes through protected areas
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Waypoints
Highlight • Trail
Tip by
5.67 km
Highlight • Lake
Tip by
5.79 km
Highlight • Lake
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Way Types & Surfaces
Way Types
2.51 km
1.96 km
1.32 km
Surfaces
3.06 km
2.72 km
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Elevation
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Today
Monday 18 May
18°C
8°C
15 %
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Max wind speed: 11.0 km/h
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This route was planned by komoot.
This trail is considered challenging. While some sources might rate it as moderate, the lack of a formal, maintained path, the necessity for significant bushwhacking, and the potential for deep river fording make it a rugged and demanding experience. It's best suited for experienced hikers comfortable with route-finding and wilderness conditions.
The trail begins near the Lake Isabel Trailhead. Access involves a logging road that becomes nearly impassable for the last quarter-mile, so be prepared for a rough approach. Parking is informal and limited due to the remote nature of the area.
Expect a very rugged and untamed terrain. The route primarily involves bushwhacking through dense wilderness, as there is no formal, maintained trail. You will likely encounter steep uphill sections and may need to ford a deep and swift-flowing river. This is not a well-trodden path.
The primary destination and highlight is Lake Isabel itself, a serene lake nestled within the Wild Sky Wilderness. The journey offers a true wilderness experience, with natural beauty characteristic of Washington State's remote areas.
Given its location within the Wild Sky Wilderness, dogs are generally permitted. However, due to the challenging terrain, bushwhacking, and potential river crossings, ensure your dog is capable of handling such conditions. Always keep your dog under control, and be aware of any specific wilderness regulations regarding pets.
As the Lake Isabel Trail is located within the Wild Sky Wilderness, standard wilderness regulations apply. While there isn't typically an entrance fee for the wilderness area itself, you may need a Northwest Forest Pass or similar recreation pass for parking at certain trailheads in the broader national forest system. Always check the latest U.S. Forest Service regulations for the Mount Baker-Snoqualmie National Forest before your trip.
The best time to attempt this challenging trail is typically during the late summer and early fall when snowmelt has subsided, river levels are lower, and weather conditions are generally more stable. Spring and early summer can present significant challenges with high river flows and lingering snow at higher elevations.
Yes, while the primary route is the Lake Isabel Trail, sections of the hike may also pass through parts of the Washington Timber Trail. Be prepared for user-created paths rather than officially maintained intersections.
Given the challenging and unmaintained nature of this trail, you should bring essential wilderness gear. This includes sturdy hiking boots, navigation tools (map, compass, GPS), sufficient water and food, layers of clothing for changing weather, a first-aid kit, and equipment for river crossings if necessary. Experience with route-finding and bushwhacking is highly recommended.
The Lake Isabel Trail is generally considered an out-and-back route to the lake. Due to the lack of formal trails and the bushwhacking required, creating a loop would be extremely difficult and is not a common option.
This specific Lake Isabel Trail in Washington State's Wild Sky Wilderness is distinct from others (like the popular Lake Isabelle in Colorado) due to its extreme ruggedness and lack of official maintenance. It's primarily accessed via bushwhacking and river fording, making it a true wilderness challenge for experienced hikers, unlike more developed trails.