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Hiking trails & Routes
United States
Alaska
Ketchikan Gateway Borough

Silvis Lakes and Mahoney Mountain

Hard

3.5

(18)

84

hikers

Silvis Lakes and Mahoney Mountain

06:13

17.3km

1,040m

Hiking

Hike the difficult 10.7-mile Silvis Lakes and Mahoney Mountain trail for alpine views, rugged terrain, and wildlife in Tongass National Fore

Last updated: February 26, 2026

Tips

Your route passes through a protected area

Please check local regulations for:

Tongass National Forest

Waypoints

A

Start point

Parking

Get Directions

1

3.99 km

Lower Silvis Lake

Highlight • Lake

The two miles of trail to Lower Silvis Lake are essentially a gravel service road that makes for great footing.

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2

4.87 km

Upper Silvis Lake

Highlight • Lake

The trail to Upper Silvis Lake feels more idyllic than the gravel service road that led to the lower lake. Although many people turn around here, well-prepared hikers may want …

Tip by

3

7.90 km

For those who continue past Upper Silvis Lake, the spur trail to Mount Mahoney is a popular side trip. However, if you continue straight you can also link the Silvis …

Tip by

4

8.55 km

Mahoney Mountain

Highlight • Summit

For those who continue as far as Upper Silvis Lake, Mahoney Mountain is a popular side trip. Watch for a variety of wildlife along the way, including birds like the northern pygmy owl.

Tip by

B

17.3 km

End point

Parking

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Way Types & Surfaces

Way Types

17.2 km

< 100 m

Surfaces

17.2 km

< 100 m

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Elevation

Elevation

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Weather

Powered by Foreca

Today

Thursday 16 July

23°C

11°C

0 %

Additional weather tips

Max wind speed: 13.0 km/h

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Comments

April 11, 2023

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Translated by Google •

April 12, 2023

6700

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Frequently Asked Questions

How difficult is the Silvis Lakes and Mahoney Mountain trail?

This trail is considered difficult or even most difficult, suitable for experienced hikers. Expect significant elevation gain, steep climbs, and rugged terrain. Sections beyond Lower Silvis Lake can be less defined and more challenging.

What is the terrain like on the Silvis Lakes and Mahoney Mountain trail?

The terrain is rugged and varied. You'll encounter steep climbs, wet and rocky sections, especially after rain. Beyond Lower Silvis Lake, the path becomes more 'off-road' with minimal tread and can be poorly marked, requiring good navigation skills. Snow can persist at higher elevations well into the summer.

What notable features or viewpoints will I encounter on the trail?

The trail offers spectacular alpine scenery. You'll pass by Lower Silvis Lake and Upper Silvis Lake, and as you ascend, you'll get vast vistas of George Inlet and beautiful alpine meadows. The summit of Mahoney Mountain provides panoramic views.

What kind of wildlife might I see along the route?

The area is known for wildlife viewing. Keep an eye out for mountain goats, bald eagles, black bears, and deer. Always maintain a safe distance and do not disturb any animals you encounter.

What is the best time of year to hike Silvis Lakes and Mahoney Mountain?

The best time to hike is typically during the summer months, though snow can persist at higher elevations well into summer. Weather conditions in Alaska are unpredictable and can change rapidly, so always be prepared for varying conditions.

Where can I park for the Silvis Lakes and Mahoney Mountain trail?

Specific parking details for the Mahoney Mountain trailhead are not provided, but access points are generally available for trails connecting to the Deer Mountain National Recreation Trail system in the Ketchikan Gateway area.

Are permits or fees required to hike Silvis Lakes and Mahoney Mountain?

This trail is located within the Tongass National Forest. While general entrance to the forest is typically free, some specific recreation sites or activities might require permits or fees. It's advisable to check the official USDA Forest Service website for the Tongass National Forest for the most current information regarding any required permits or fees for this specific trail. You can find more information at usda.gov.

Is the Silvis Lakes and Mahoney Mountain trail dog-friendly?

While many trails in national forests are dog-friendly, specific regulations can vary. It's best to check with the Tongass National Forest service directly regarding leash laws and any restrictions for dogs on this particular trail to ensure compliance and safety for your pet and wildlife.

Does the Silvis Lakes and Mahoney Mountain trail connect to other routes?

Yes, the route incorporates sections of the larger Deer Mountain National Recreation Trail system. You will also traverse parts of the Silvis Lake Trail and the Deer Mt - Mahoney Mt Spur Trail.

Are the Silvis Lakes used for anything besides recreation?

Yes, both Lower Silvis Lake and Upper Silvis Lake are often dammed and contribute to the city's water supply, in addition to offering scenic beauty for hikers.

What should I bring for a hike on this trail?

Given the trail's difficulty and unpredictable Alaskan weather, you should bring sturdy hiking boots, layers of clothing, rain gear, plenty of water, high-energy snacks, a map, compass or GPS, and bear spray. Be prepared for wet and potentially snowy conditions even in summer.

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