Commonwealth Basin - Red Mountain Pass 

Explore the depths of Commonwealth Basis and the heights of Red Mountain on this 7-mile trek situated in Snoqualmie Pass.

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Author: HikingWithMyBrother
Date: 25 Oct 2009 9:12:39 AM
Activity: Hiking
State: Washington (WA)
Distance: 7.2 mi  (Change units)
Average Speed: 1.3 mph - 0:45:50/mi
Duration: Total: 5:30:00
Survey Elevation: Total Gain: 2941 ft
Total Loss: 265 ft
Net Change: 2676 ft
Difficulty: 7 / 10
Tags: commonwealth basin,, north bend, red mountain, Seattle, Washington
Rating: Unrated   Rate it

We continued our race against the weather this week, hoping to complete a few more hikes in the Pass before the snows settle in. After a few weeks of hiking to lakes, we decided to head for Red Mountain and the Commonwealth Basin, intent on finding a scramble route to the top.

The Commonwealth Basin Trail has its origins in the mining claims red mountain commonwealth basin hikingwithmybrothercommon in this area. The trail was originally built by prospectors around 1890 to access claims within the valley. In 1928 Fred Cleator was put in charge of the US Forest region encompassing Oregon and Washington and immediately set about piecing together a contiguous trail through the region that would become eventually become the Cascade Crest Trail (CCT). The old Commonwealth Basin route served as part of the CCT until the late 1970s when, as part of the changes made during the construction of the Pacific Crest Trail (PCT), it was abandoned for the more efficient Kendall Katwalk route.

Most guidebooks suggest you follow the PCT to the Commonwealth Basin Trail (#1033) to get to Red Mountain, but we had already explored that portion of the Pacific Crest Trail on our way to Kendall Peak. Instead, we jumped at the chance take an alternative approach to our destination; a small, unmarked, but well-trodden trail branches off to your left just after you leave the trailhead. This is the old CCT route that is now officially “abandoned,” though it is clearly still well loved. There are some things to consider if you’re thinking of taking this route. On the plus side, the CCT route shaves off a mile or more of hiking; on the down side, the trail is on the rough side and there are no bridges to cross Commonwealth Creek, which was a bit tricky.

Either way, you will be taken you though mature stands of Silver Fir and hemlock, over red mountain red pond commonwealth basin hikingwithmybrotherstreamlets and talus fields and past alluring waterfalls. The old Basin route saves much of its elevation gain for Red Mountain itself, while the PCT trail gains more elevation that you need, requiring you to relinquish what you’ve so recently gained. Whichever way you choose to go, you’ll eventually find yourself on the Commonwealth Basin Trail (#1033). This will bring you to the end of the basin and up the base of Red Mountain to Red Pass. After quite a number of switchbacks you’ll reach a level shoulder where short spur trails lead to Red Pond and up the crown of Red Mountain.

Snows had already made the exposed rock very slick, so we chose to forgo the scramble up to Red’s summit, and instead pushed on to Red Pass. The views here are spectacular. The mountain simply drops away, creating the feeling of being at the top of a massive amphitheater. The horn of Mt. Thompson steals the show, a fitting counterpoint to Mt. Rainier to the south. Commonwealth Basin spreads out to Alpental in the distance. From here Snoqualmie Mountain and Guye Peak seem less intimidating than they usually do, and rocky top of Lundin Peak is just ahead on the trail.

Red Mountain suddenly looks much more craggy and intimidating from this side, so we opted to continue on to East Lundin Peak. For years Lundin peak was called lundin peak red mountain commonwealth basin hikingwithmybrother“Little Sister” a reference to it sharing a ridgeline with Snoqualmie Mountain. At some point it was renamed in honor of J.W. Lundin, who evidently did a great deal of good work for the US Forest Service. We were ill-equipped to get to the actual summit, so the steep but easily accessible East Peak was a perfect destination. Simply follow the trail along the ridge, ignoring the signs that tell you the trail is abandoned. Take the left fork heading upwards and stick to the rough trail to the top. The views don’t change much with the extra effort of pushing past the common stopping point of Red Pass, but it’s a cozy little spot to settle down and refuel.

Though probably better known as a snowshoe route, a trip through Commonwealth Basis is a great hike. The heights of Red Pass are attainable for just about anyone and are more than worth the exertion. We recommend going off the beaten path and using the older CCT route if you are up for the extra challenge. It gives you a much better feel for the Basin as a whole.

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TO TRAILHEAD: To get there, take I-90 to exit #52. Turn left under the freeway and take the first right. Follow the road to two large parking areas. The first is reserved for stock; hikers should continue to the further parking lot and the trailhead. Northwest Forest Pass required.

Position Format: Datum:

Track 001

Distance: 3.58 mi Points: 503
Total Time: none Speed: 0.0 mph Pace: 0:00 / mi
Active Time: none Speed: 0.0 mph Pace: 0:00 / mi

Points of Interest


Location: 47.427927, -121.413515
Parking area. Follow the Pacific Crest Trail (PCT) #2000 starting at the east end of the lot.

Trail sign

Location: 47.427652, -121.413431
To take the old abandoned path, ignore this trail sign, and find the path leading north that starts about 100 yards from the parking lot.


Location: 47.427417, -121.412854
Junction with an unsigned "abandon" trail. Turn left. To follow the alternate longer route continue straight ahead on the PCT #2000 for 2.5 miles to the junction with Commonwealth Basin - Red Pass Trail #1033. This route adds 2 miles to the overall length of the trip.

In the basin

Location: 47.433284, -121.408603
Red Mountain teases in the distance as you hike through the basin.

Commonwealth Creek Cascade

Location: 47.436114, -121.405663
Follow a short boot-path to the left to find this cascade and pool on Commonwealth Creek.

Short Falls

Location: 47.436375, -121.404333
Water crashes down another short fall on Commonwealth Creek


Location: 47.436615, -121.403248
Commonwealth Creek ford and trail junction. There is no bridge so be prepared to get wet if the water is running high. Once you cross the creek, turn right and follow the trail that leads upstream. The trail heading northwest goes to Cave Ridge.

Creek Ford

Location: 47.436666, -121.403131
Hiker at the first ford across Commonwealth Creek.


Location: 47.438912, -121.399596
Commonwealth Creek ford #2.


Location: 47.440230, -121.397401
Junction with Commonwealth Basin - Red Pass Trail #1033. Turn left.

Junction Marker

Location: 47.440280, -121.397295
Follow Trail #1033 to the left.

Ice Puddles

Location: 47.443530, -121.395836
Ice forms in the water that has accumulated on the trail from recent rain fall.

Creeklets and bramble

Location: 47.446592, -121.396415
Water picks its way through log and bramble on a frosted autumn morning.


Location: 47.452718, -121.394450
View of a seasonal waterfall in the rocky crags of the mountain side.

Kendall Peak on Switchbacks

Location: 47.453180, -121.393969
Kendall Peak dominates the views as you battle dozens of micro switchbacks up the side of Red Mountain.


Location: 47.454233, -121.394646
Follow a short spur leading to the left for an overlook of Commonwealth Basin.


Location: 47.455891, -121.394677
Red Pond, surrounded by talus and meadows is the perfect place to stop for lunch. Follow a spur trail to the left to reach the shore.


Location: 47.456329, -121.394076
A pika in his talus home.

Red Pond Overlook

Location: 47.456126, -121.393261
Overlooking Red Pond from the trail leading up to Red Pass.


Location: 47.459252, -121.395458
Junction with "abandoned" trail. Head straight ahead to ascend Lundin Peak.

Abandoned Trail

Location: 47.459201, -121.395407
Follow the Trail Abandoned sign to head up Lundin Peak

Up and Up

Location: 47.459956, -121.396523
Red Mountain is in the background as a hiker climbs the trail over the season's first dusting of snow.


Location: 47.460583, -121.397690
Eastern Summit of Lundin Peak. Look south to take in all of Commonwealth Basin. The fiery and earthly hues of Red Mountain are to the immediate east. The "Arrow", Kaleetan Peak, is to the north.

View South

Location: 47.460594, -121.397660
Commwealth Basin is to the South, as well as the Snoqualmie Ski Resort, Guye Peak, and Keechelus Lake

View West

Location: 47.460609, -121.397649
The shear cliffs of Lundin Peak

View Northeast

Location: 47.460616, -121.397628
Kaleetan Peak, which means "Arrow" in Native American pierces the skyline.

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