The Top 20 Peaks in King County
Whether for the view or for the challenge, climbing the mountainous peaks in King County is the best way to experience more of this beautiful region. But with 20
to choose from, it can be tough to know which peak to proceed with. That’s why we’ve collected the best peaks and summits in King County for you here — so you can easily add one to your next adventure.
to choose from, it can be tough to know which peak to proceed with. That’s why we’ve collected the best peaks and summits in King County for you here — so you can easily add one to your next adventure.
Last updated: November 13, 2025
Squak Mountain Central Peak
Highlight • Summit
When navigating to the peak, some of the downed trees and vegetation can make it a bit confusing. There's white spray painted arrows on the ground at the most confusing spots, so keep an eye out for those!
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Whittaker Wilderness Peak Trail (upper section)
Highlight (Segment) • Trail
Wilderness Peak is the highest point in King County's Cougar Mountain Regional Wildland Park and you will see some wonderful old-growth conifers. This loop hike offers a diversity of steep …
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Little Si Summit
Highlight • Summit
Although Little Si is only 1,550 feet (472 m) in elevation, it offers surprisingly good views of the valley all around you. On a clear day, you also get good views of nearby peaks like Mount Si and Mount Washington.
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Bench at Wilderness Peak
Highlight • Summit
The woody Wilderness Peak doesn't offer any views but you will find yourself in the middle of the forest. There is a bench to take a break and enjoy a …
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Granite Mountain Lookout
Highlight • Summit
At the summit stands a lookout cabin/fire tower, which was originally built in 1924 to keep watch for fires. While it is no longer used for its original purpose, the …
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Cougar Mountain Peak
Highlight • Summit
Cougar Mountain is a peak at the eastside of Seattle. The forested heart of the hill was officially preserved by King County in June 1983 as Cougar Mountain Regional Wildland Park.
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Silver Peak
Highlight • Summit
To get to the top of Silver Peak requires a little bit of category 2 scrambling. You do loose tree coverage when the scrambling starts, so ensure you have enough water!
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Mailbox Peak — old trail
Highlight (Segment) • Trail
The old trail up Mailbox Peak earned its fearsome reputation the hard way — sending numerous wayward hikers stumbling into proper wilderness, where they often needed to be rescued. If …
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Alpine Baldy Trail
Highlight (Segment) • Trail
Alpine Baldy is a mountain located in the southeastern region of Wild Sky Wilderness of Washington. Despite overlooking the Highway 2 corridor, Alpine Baldy is largely unexplored by many 'destination …
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Mount Phelps
Highlight • Summit
Mount Phelps is arguably the most distinctive peak visible when looking east towards the Cascades from the Seattle area. The high peaks of the Cascade Crest such as Mount Daniel …
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