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A tough loop route that crosses three intense mountain passes while providing scenic views.

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6,396' 1,950 m


1,479' 451 m


9,711' 2,960 m


9,718' 2,962 m



Avg Grade (5°)


Max Grade (28°)

Dogs No Dogs

Features Commonly Backpacked · Fall Colors · Lake · River/Creek · Views · Waterfall · Wildflowers · Wildlife

Road to trailhead is unmaintained in winter. Most of this route will be snowbound in winter.


This nearly 44-mile route is one of the most rigorous routes that hikers can attempt in the park. Rising and falling, but gaining over 4,700 vertical feet, this is a great roller-coaster route that will leave your legs tired, but your soul refreshed. The solitude and incredible views make the strenuous effort worthwhile.


You'll begin your lengthy route in the Olympic National Forest, just outside of the National Park Boundary. To begin what is suggested as a multi-day journey, descend from the Slab Camp Trail to Duncan Flats where you cross the Gray Wolf River and intersect the Gray Wold Trail. Accounting for almost half of the total mileage, the Gray Wolf Trail will lead you through gently sloped terrain as you first cross through the National Forest, followed swiftly by the Buckhorn Wilderness, and finally into Olympic National Park. About 8 miles into your trip, you'll pass the Three Forks Campground, where you'll turn west onto the Cameron Creek Trail.

Taking the loop portion of the route in a counter-clockwise direction leads you on a slightly less steep route of the area. Though you'll still be climbing plenty, your burning legs will appreciate the extra energy. You'll continue on the moderate slope, following Cameron Creek until you reach Lower Cameron Basin. Continue on until you reach the intersection with the Grand Pass Trail and the Lost Pass Trail. Continue first west, then south on the Lost Pass Trail.

You'll eventually make your way through Upper Cameron Basin, and finally to Cameron Pass. You're at the high point of the loop, so enjoy the views from up here! Even though you'll have reached a high point, you'll still have plenty of climbing ahead.

From Cameron Pass, continue on or explore the surrounding ridges and peaks. You'll enter Lost Basin, not many visitors see this area. You'll descend for a bit near Lost Peak, and eventually will regain most of your lost elevation as you crest Lost Pass. Shortly after, your descent will start in earnest as you head down to the Dosewallips River and a junction with the Dosewallips River Trail.

Follow the Dosewallips River Trail back north, as you continue to lose elevation. Though you'll be dropping out of the rugged terrain of the mountains, the views along the Dosewallips River and the dense forest in the surrounding area are still beautiful. Continue on the Dosewallips River Trail until you come to an intersection with the Gray Wolf Trail. Turn onto the Gray Wolf Trail and climb 2500 feet in about 4 miles to Gray Wolf Pass.

After the Pass descend by some lovely alpines lakes and switchback down rocky, mountainous terrain before your final descent into the densely forested area surrounding the Gray Wolf River. There will be a few spectacular campsites along the way. At the junction with the trail back to Three Forks make sure you take the turn onto the Gray Wolf Trail and now you can return the way you came. Make sure you save some energy for the final climb to Slab Camp trailhead.


Shared By:

Doug Scott with improvements by Eric Nagle and 1 other

Trail Ratings

  3.3 from 4 votes


  3.3 from 4 votes
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in Washington


19 Views Last Month
4,340 Since Apr 7, 2016
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A grassy peak above Lost Pass
Nov 17, 2021 near Port An…, WA
Tundra on top Cameron Pass
Nov 17, 2021 near Port An…, WA
The beautiful meadow just below Gray Wolf Pass!
Nov 11, 2015 near Quilcene, WA
Beautiful flowers through these fields!
Nov 11, 2015 near Quilcene, WA
Looking towards Lost Pass.
Nov 11, 2015 near Port An…, WA
Looking north from the top of Gray Wolf Pass
Nov 11, 2015 near Quilcene, WA


Current Trail Conditions

Add Your Check-In


Jun 20, 2024
Michael Young
Nov 1, 2020
Kathie Baxter
Moderately difficult trail, narrow trail with loose gravel in spots, fairly steep. Beautiful scenery along the river. 6.3mi — 4h 17m

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