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Mount Jupiter

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A long, bone-dry, and at times steep trek to a former lookout site atop Mount Jupiter, where you'll be treated to sweeping views of the Olympic eastern front, Puget Sound, Mount Rainier, and other Cascade peaks of prominence. Situated between Mount Constance and The Brothers, Jupiter also gives an eagle's-eye perspective of the Duckabush and Dosewallips Valleys, two of the Olympics' great green portals into its hinterlands. Pack plenty of water, and if the summit seems a bit out of reach, there are plenty of views to be had on bumps and knolls along the way.

Starting in a recently logged over area, Trail No. 809 (scheduled to be rehabilitated by the Washington Trails Association in the near future) winds its way through private timberlands before entering the Olympic National Forest in just under 1 mile. Through thick forest wrapped in rhodies and salal, peek-a-boo glimpses hint at the visual rewards awaiting persistent hikers.

After a little bit of climbing, the trail rides the ridge crest, undulating between the Dosewallips and Duckabush watersheds (but no water along the trail) and dipping and blipping along the way. At 3.5 miles pass a small promontory providing a view down to the Duckabush Valley. After a few more mild descents and ascents (which will seem major on the return), the trail ratchets up the climbing.

With a thinning forest canopy and more open ledges, bigger and better views assure you it's worth carrying on. Upon entering The Brothers Wilderness at 5.5 miles (elev. approx. 4000 ft), the trail gets down to business, switchbacking relentlessly up a basalt ledge and dry open slopes. At 7.2 long miles, reach the 5701-foot sunny summit.

You worked too hard not to stick around. Kick back-the views are incredible in every direction, from waves of craggy Olympic peaks to the west, to waves of saltwater in the Puget Basin to the east. Seattle's skyline shimmers in the afternoon sunlight. A series of remote tarns, the Jupiter Lakes, sparkle in north-facing cirques directly below. While Mount Jupiter is nowhere near being one of the Olympics' highest summits, its positioning along the eastern front and its isolation from other peaks gives it a bit of distinction. Perhaps the Roman god who lent his name to this summit may actually even prefer the views from here than from remote and chilly Mount Olympus.
Driving Directions:

From Quilcene drive south on US 101 for 13.5 miles to Mount Jupiter Road (Forest Road 2610-010), located on the right exactly 2.5 miles beyond the Dosewallips State Park entrance. (If you're coming from the south, the turnoff is just shy of a mile north of Duckabush Road.) Follow Mount Jupiter Road for 3.5 miles and turn left on FR 2610-011. Continue on this steep and rough road 3 miles to the trailhead.

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Recent Trip Reports

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There are 48 trip reports for this hike. See all trip reports for this hike.
Mount Jupiter — Jul 08, 2013 — Tdogpack
Day hike
Issues: Blowdowns | Road to trailhead inaccessible
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Just in case you wondered if anything had changed since April...the road still blocked 3.1 miles fro...
Just in case you wondered if anything had changed since April...the road still blocked 3.1 miles from Hwy 101, which is about 2.5 miles or so from the trailhead.
We hiked up the road, and found the trailhead sign, and the trail switchbacking up. There was blowdown in the trees, but a few nice stretches of trail too. We came out of the trees to find fresh clear cut, which had obliterated the trail.
At that point, we decided to abandon the trail, went up a short way, and got on the road (which is at the top of the clear cut) to the relay towers. At the top of the ridge, we walked west into Forest Service land. We looked around for the trail, but gave up and followed the road back to the car.
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Mount Jupiter — Apr 26, 2013 — j.jeffy
Day hike
Issues: Blowdowns | Overgrown | Road to trailhead inaccessible
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Tried to hike Mt Jupiter trail today to the snow level and didn't get very far due to a tremendous a...
Tried to hike Mt Jupiter trail today to the snow level and didn't get very far due to a tremendous amount of blowdown. While the road to the trailhead is blocked for logging 3 miles from the trailhead that is not a difficult hike - even with a fairly heavy pack I was carrying for conditioning.

The trail through the logged area was OK with just some minor washouts, but once I crossed into the Olympic National Forest, it was a disaster. For about 50 yards I had to kick through salal that just about covered the trail. But then it got really hard as blowdown after blowdown had me go offtrail to continue my hike. After making about a quarter mile in 45 minutes I threw in the towel and turned back.

While the logging operations of the past two years have caused this trail to be little used, the tread is still in great shape. But with all the trees crossing the trail, I expect few will see the reportedly great views from Mt Jupiter during this upcoming hiking season.
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Mount Jupiter — Jul 30, 2011 — Jake
Day hike
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Just a word to the wise that at least the Mt. Jupiter Trail route is closed at present because of lo...
Just a word to the wise that at least the Mt. Jupiter Trail route is closed at present because of logging. I received a message from a ranger indicating that it may in fact be closed for the season. We had planned on climbing Jupiter this past weekend, and drove several miles up the access road only to arrive at a locked gate with signs indicating that the trail was not accessible. So we diverted to Mt. Townsend (to the north) and enjoyed an amazing hike there instead!
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Mount Jupiter — Jul 08, 2010 — alpine
Day hike
Features: Wildflowers blooming
Issues: Blowdowns | Snow on trail | No water source
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On the warmest day of the year so far, my thinking was to gain a bit of elevation to avoid the heat ...
On the warmest day of the year so far, my thinking was to gain a bit of elevation to avoid the heat a little, get some needed exercise, and explore a new hike. Two out of three's not bad - cooler temps were elusive.

Road access is straight forward. Road's a bit rough due to coarse gravel but no potholes to speak of. Hit the trail a little before 9am with only one other car at trailhead. Once through the initial clearcut, the shade of the relatively level treed ridge traverse was most welcome. Though long, and considerably uphill in places, the trail is in good shape. Passed the few blow downs with ease. Encountered a couple of snow patches in final switchbacks within a half mile of the top that I worked over and around. Found an especially welcome cool breeze when emerging at the summit ridge, due to cool air blowing up the still very snowy north facing slopes, with snow on the ridge but off the trail. Enjoyed the summit views all around - beautiful - provides an unusual perspective of the eastern and central Olympics. Arrived on top a little after noon.

Yes, the trip is long, dry, with 75% or more of the walking in the trees and pretty view less... but when it opens up up high, the final ridge walk and summit are sweet.

By the way, I enjoyed one of the most impressive rhodie bloom-walks that I've ever seen. Timing is everything!

No bugs this day
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Mount Jupiter — Jul 23, 2009 — Ed Hunds
Day hike
Issues: Blowdowns | No water source
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The trail is in fairly good shape considering it is not utilized very much. In some places vegetatio...
The trail is in fairly good shape considering it is not utilized very much. In some places vegetation is beginning to take over the trail. The trail for the most part was a ho-hum trail showing peek-a-boo glimpses of the surrounding mountains. Views are actually not seen until after you have hiked several miles.

I got there before the bugs woke up which made the first part of the trail very quiet, almost eerie with the morning mist. The sun did not show it self until I had hiked up above the clouds. Low clouds were there to greet me when I returned to the trail head.

Few wild flowers, no biting bugs, no streams to cross. Several blow downs encountered. Bring water; it was much warmer up above.
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Mt-Jupiter_alpine.jpg
From summit looking down Jupiter Ridge to Hood Canal. Photo by Alpine.
Location
Mount Jupiter (#809)
Olympics -- East
Olympic National Forest - Hood Canal Ranger District
Statistics
Roundtrip 14.4 miles
Elevation Gain 3600 ft
Highest Point 5701 ft
Features
Wildflowers/Meadows
Mountain views
Summits
Guidebooks & Maps
Day Hiking: Olympic Peninsula (Romano - Mountaineers Books)
Green Trails The Brothers No. 168
Custom Correct The Brothers-Mount Anderson

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