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Anti-Aircraft Peak (Cougar Mountain)
pnwhikes > Central Cascades > Issaquah
Anti-Aircraft Peak is a relatively level, trouble-free hike through Cougar Mountain Regional Wildland Park. Not long ago, this peak was an active Nike Missile Launch Site to be used in case of invasion (thankfully it wasn't needed.) Mine shafts, roads and cables lying within the mountain from years of mining, logging and exploration will be among your finds along the trail. This park, like other parks in the area (including Tiger Mountain and Squak Mountain) contains a system of trails, with many destinations and routes. The route we have outlined for you begins with 0.1 miles on the Shangri La Trail (E1.) It then follows Tibbetts Marsh Trail (N9) for 0.1 miles to Anti-Aircraft Ridge Trail (N7.) Anti-Aircraft Ridge Trail ends after 0.7 miles at a T with Cougar Pass Trail (N8.) From there, head east toward Clay Pit taking the Tibbetts Marsh Trail and ending at Clay Pit Road after 0.2 miles. The east end of the road leads to an active clay mine. Head west on Clay Pit Road for 0.1 miles to Mine Shaft Trail (C10) and head south where you find a grate-covered mine shaft. Mine Shaft Trail meets up with the East Fork Trail (C8) after 0.3 miles. Follow East Fork Trail for 0.7 miles to Freds Railroad Trail (C7.) The trail heads north, crossing Clay Pit Road and becomes Klondike Swamp Trail (N5) after 0.4 miles. After 0.9 miles on Klondike Swamp Trail, head east on Lost Beagle Trail (N6) for 0.7 miles This is the steepest portion of the trail as you regain all elevation lost during the first portion of the hike. Lost Beagle Trail leads back to the top of Anti-Aircraft Peak, which is a great place to picnic after this great hike. From there, continue on Lost Beagle Trail to Anti-Aircraft Ridge Trail (hang a left) and then Tibbetts Marsh Trail (another left) and back to Shangri La Trail (yet another left) to get back to the parking area. To the left of the trailhead is a view point where you can look out over beautiful Lake Sammamish. Make sure you print out a map from the link below so you know where youre going and how to get back.
Type Length Difficulty Rating Gain
Forest 3.9 mi 1 / 5 5.2 / 10 600 ft

User Groups
Hikers, Dogs, Horses

Accessibility
Year round

Permits
No permits needed, parking is free

Maps
Green Trails: #203S Cougar Mountain
USGS: Bellevue South
 
Hike Featured In...
Day Hiking Snoqualmie RegionDay Hiking Snoqualmie Region
Day Hiking Snoqualmie Region
By Dan A. Nelson
Driving Directions:
From Seattle, E on I-90 to exit 13. Right off freeway onto Lakemont Boulevard S.E for 2.3 miles. Left on S.E. Cougar Mountain Way for 1.2 miles. Bear Right onto S.E. Cougar Mountain Drive for 0.7 miles to signed trailhead
Contact Information:
King County Parks and Recreation
Parks and Recreation Division
Tel: 206.296.8687
http://www.kingcounty.gov/parks

Anti-Aircraft Peak trailhead on Cougar Mountain Beautiful, lush Cougar Mountain Clay Pit - an active clay mine A grate covered mine shaft, a relic from the mining days Another example of Cougar Mountains lush environment Skunk cabbage - From kstobie's hike report on Sunday, April 15, 2012. We started on Lost Beagle from the park at parking lot and then found this trail. - From kstobie's hike report on Sunday, April 15, 2012.
Highlighted StarHighlighted StarHighlighted StarHighlighted StarHighlighted StarHighlighted StarHighlighted StarHighlighted StarDim StarDim Star Sky Country (Cougar Mountain) (1.2 mi away)
The Sky Country trailhead in Cougar Mountain Regional Wildland Park gives access to Coal Creek Falls, Cave holes and many other wonderful things. The trail sys...Read More
Highlighted StarHighlighted StarHighlighted StarHighlighted StarHighlighted StarHighlighted StarHighlighted StarHighlighted StarDim StarDim Star Cougar Mountain Regional Wildland Park (1.4 mi away)
The Cougar Mountain Regional Wildland Park is the pride and joy of the King County Parks system. With over 35 miles of trails it has much to offer. It is located extremely close to Seattle so no one has an excuse not to visit. There are four main ...Read More
Coal Creek FallsFar Country FallsFar County LookoutDoughty FallsLong View
Highlighted StarHighlighted StarHighlighted StarHighlighted StarHighlighted StarHighlighted StarHighlighted StarHighlighted StarDim StarDim Star Red Town (Cougar Mountain) (1.5 mi away)
Red town is one of four main trailheads giving access into Cougar Mountain Regional Wildland Park. Most the trails are level in this region of the park, giving...Read More
Highlighted StarHighlighted StarHighlighted StarHighlighted StarHighlighted StarHighlighted StarHighlighted StarDim StarDim StarDim Star De Leo Wall (Cougar Mountain) (1.8 mi away)
Most of the hike to De Leo Wall in Cougar Mountain Regional Wildland Park is easy, with a couple of tough climbing sections. The trail is suprisingly remote gi...Read More
A view of Mt RainierMost of the hike was through the trees.
Highlighted StarHighlighted StarHighlighted StarHighlighted StarHighlighted StarHighlighted StarDim StarDim StarDim StarDim Star Wliderness Peak and Cliff Trail (Cougar Mountain) (1.8 mi away)
From Connector Trail trailhead off Rte 900 (Renton-Issaquah Road SE), it connects to the Wilderness Cliffs Trail winds up through the woods to Wilderness Peak (1595ft). Nice bench at the top. Descend Wilderness Peak trail to Shy Bear Trail, Long ...Read More
Highlighted StarHighlighted StarHighlighted StarHighlighted StarHighlighted StarHighlighted StarHighlighted StarHighlighted StarDim StarDim Star Bear Ridge (Cougar Mountain) (1.9 mi away)
Cougar Mountain's Bear Ridge Trail is quiet and peaceful as it gently climbs along Bear Ridge. The hike provides many unusual sightings including the Fantastic Erratic Glacial Boulder and Ant...Read More
From the ShangraLa TrailNot that interesting a rock.Another signA sign telling you the trailsA snail on the trailThe trail widens hereTrees alongside the trailThe small parking lot at the trailhead
Highlighted StarHighlighted StarHighlighted StarHighlighted StarHighlighted StarHighlighted StarHighlighted StarDim StarDim StarDim Star Pickering Trail (2.1 mi away)
Pickering Trail consists of 2.5 miles of hiking trails and is located within Lake Sammamish State Park in Issaquah. The park is made up of 512 acres of land with 6,858 feet of shoreline on Lake Sammamish. The area is made up of open fields, deciduous...Read More
Highlighted StarHighlighted StarHighlighted StarHighlighted StarHighlighted StarHighlighted StarHighlighted StarHighlighted StarDim StarDim Star Wilderness Creek (Cougar Mountain) (2.2 mi away)
The route to Wilderness Peak on Cougar Mountain Regional Wildland Park follows Wilderness Creek and circles Shy Bear Marsh. This hike, along with others on Coug...Read More
It was rainy and hazy throughout most of the hikeShy Bear Pass was a major trail junction, about 0.5 miles from the peakBoardwalk section, it was pretty neatOne of the many bridges along the trail, close to the junction of the loop
Highlighted StarHighlighted StarHighlighted StarHighlighted StarHighlighted StarHighlighted StarHighlighted StarHighlighted StarDim StarDim Star Squak Mountain (2.4 mi away)
The Squak Mountain hike is a lush trail that hovers over a bustling city, located on land donated by the Bullitt family in 1952 in hopes of "protecting, restoring and maintaining the natural physical environment of the Pacific Northwest." Squak Mount...Read More
The first of 8 signs on the Pretzel Loop interpretive trail, great for kidsHiking along the service access road for a quarter mile or soRadio towers at the top of Central PeakThe Bullitt Lodge fireplaceSome fog hanging in the air, luckily no rainThere were many creeks heard throughout the hikeTree blown down across the trail
Highlighted StarHighlighted StarHighlighted StarHighlighted StarHighlighted StarHighlighted StarHighlighted StarDim StarDim StarDim Star Chirico Trail (4.9 mi away)
The Chirico Trail (also refered to as Pilots Trail) is a steady climb up the western side of Tiger Mountain to Poo Poo Point. The point and the field below are used as a major paragliding park in cooperation with the Washington State Department of N...Read More
View from POO POO point near sunset.
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