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Hiking trails & Routes
United States
Washington
Snohomish County

Mount Forgotten Trail

Hard

2.8

(26)

77

hikers

Mount Forgotten Trail

09:36

19.4km

1,320m

Hiking

Embark on the Mount Forgotten Trail, a difficult hike that takes you through old-growth forest before opening into a valley filled with talus fields. This challenging route covers 12.1 miles (19.4 km) and demands a significant 4330 feet (1320 metres) of elevation gain, typically requiring about 9 hours and 35…

Last updated: April 23, 2026

Tips

Includes segments that may be dangerous

Parts of this route comprise highly technical, difficult, or hazardous terrain. Specialist equipment and prior experience is required.

After 2.21 km for 5.38 km

After 7.69 km for 475 m

After 8.24 km for 2.98 km

After 11.3 km for 475 m

After 11.9 km for 5.38 km

Waypoints

A

Start point

Parking

Get Directions

1

3.10 km

Perry Creek Trail

Highlight (Segment) • Trail

A challenging hike through lush forest, the Perry Creek trail steadily ascends through the valley until the crossing of Perry Creek, just above Perry Creek falls, where it takes a …

Tip by

2

9.60 km

Mount Forgotten

Highlight • Summit

The summit of Mount Forgotten is rocky, exposed, and unforgiving. If you are lucky enough to summit on a clear weather day, you can expect sweeping views of the close-by summits of Twin Peaks, Dickerman, and Glacier Peak.

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B

19.4 km

End point

Parking

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Way Types & Surfaces

Way Types

14.7 km

3.66 km

547 m

357 m

145 m

Surfaces

15.1 km

3.46 km

547 m

350 m

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Elevation

Elevation

Nothing selected – click and drag below to see the stats for a specific part of the route.

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Weather

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Today

Friday 10 July

19°C

9°C

0 %

Additional weather tips

Max wind speed: 11.0 km/h

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Frequently Asked Questions

How difficult is the Mount Forgotten Trail?

The Mount Forgotten Trail is considered a strenuous hike with technical sections, rated as "Strenuous 4, Technical 5" for the full ascent. While the initial miles are moderate, the trail becomes much more demanding beyond Perry Creek Falls, involving steep ascents, route-finding, loose rock, and scrambling, especially on the climbers' trail and the traverse from Forgotten Meadows.

How long does it typically take to hike the Mount Forgotten Trail?

The full round trip for the Mount Forgotten Trail is approximately 13 miles (19.4 km) with an elevation gain of around 4,500 feet (1320 m). Komoot estimates the duration to be around 9 hours and 36 minutes, but this can vary significantly based on fitness levels and time spent enjoying the views or navigating technical sections.

Where does the Mount Forgotten Trail start and where can I park?

The hike typically begins at the Perry Creek Trailhead. You'll follow the Perry Creek Trail (#711) from there. Parking is usually available at the trailhead, but it's always wise to arrive early, especially on weekends, as spots can fill up quickly.

Do I need any permits or pay entrance fees for the Mount Forgotten Trail?

Yes, the Mount Forgotten Trail is located within the Mount Baker-Snoqualmie National Forest. A Northwest Forest Pass or America the Beautiful Pass is typically required for parking at the trailhead. Always check the official Forest Service website for the most current permit and fee information before your visit.

Is the Mount Forgotten Trail dog-friendly?

While dogs are generally allowed on trails within the Mount Baker-Snoqualmie National Forest, it's crucial to keep them on a leash to protect wildlife and ensure a pleasant experience for all hikers. Given the trail's challenging and technical sections, including scrambling and loose rock, consider if it's suitable for your dog's abilities and safety.

What is the best time of year to hike the trail?

The best time to hike the Mount Forgotten Trail is generally from late summer to early fall (July through September) when snow has melted from higher elevations and weather conditions are more stable. Attempting the peak in early season can mean encountering significant snow, requiring appropriate gear and experience.

What are the key viewpoints or highlights along the route?

The trail offers breathtaking views throughout. You'll pass through the Perry Creek Trail and reach Perry Creek Falls. From Forgotten Meadows, you'll get spectacular vistas of Mount Baker, Glacier Peak, and other North Cascades peaks. The summit of Mount Forgotten boasts an amazing 360-degree panorama, including Three Fingers, White Horse, Shuksan, and Glacier Peak.

What is the terrain like on the Mount Forgotten Trail?

The terrain is highly varied. It starts with old-growth forest, transitions to a valley with talus fields and creek crossings (often without bridges), then ascends steeply with switchbacks. Beyond Forgotten Meadows, the path becomes unmaintained, involving route-finding, a challenging descent over loose dirt and rock, and traversing heather slopes. The final push to the summit includes a loose gully and bouldering.

What kind of wildlife or plants can I expect to see?

The trail passes through the Perry Creek Research Natural Area, which is home to 250 different plant species, offering a diverse botanical experience. While specific wildlife sightings are never guaranteed, the North Cascades are home to various mammals and birds. Keep an eye out for alpine wildflowers in the meadows during summer.

Does the trail intersect with other paths?

Yes, the route primarily follows the Mount Forgotten Trail and the Perry Creek Trail. Sections of the Mount Forgotten Climber's Trail are also part of the route, particularly for the final ascent to the summit.

What should I bring or wear for this hike?

Given the trail's difficulty and varied terrain, sturdy hiking boots with good ankle support are essential. Be prepared for creek crossings, potentially requiring waterproof footwear or extra socks. Layers of clothing are recommended for changing weather conditions, along with plenty of water, snacks, navigation tools (map, compass, or GPS), and basic scrambling gear if you plan to tackle the most technical sections.

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