Thunder Knob Trail

EASY 25 reviews

Thunder Knob Trail is a 3.5 mile moderately trafficked out and back trail located near Marblemount, Washington that features a lake and is good for all skill levels. The trail is primarily used for hiking, walking, nature trips, and birding and is best used from March until November.

DISTANCE
3.5 miles
ELEVATION GAIN
702 feet
ROUTE TYPE
Out & Back

kid friendly

birding

hiking

nature trips

walking

forest

lake

views

wild flowers

hiking
4 days ago

10 days ago

hiking
10 days ago

11 days ago

hiking
12 days ago

Short with great views from the top

16 days ago

hiking
1 month ago

Well this trail is completely washed out as of may 5 2017. Water is too strong and deep to even attempt to cross. The surrounding area is serene enough though and I saw a grizzly bear near the trail head.

7 months ago

View of Diablo lake at top is awesome, easy hike a little elevation gain. my 11 year old & 70 year old mother nature law stopped half way up. I jogged up the rest with my husband so we could see the views.

backpacking
9 months ago

9 months ago

hiking
10 months ago

hiking
10 months ago

hiking
10 months ago

I took my eleven year old son and my 3 year old lab. Perfect length and elevation gain for minimal complaining. :) beautiful view of the lake from the top. Well maintained trail.

hiking
Thursday, June 09, 2016

The Thunder Knob trail presents a cool, relatively easy trail with a consistent but gradual incline, and results in some rather grand views of an already pristine area.

The trail begins at the north loop of the Colonial Creek campground. It immediately takes you over and across Colonial Creek, which with the recent late Spring thaws, was rather powerful. After crossing the creek you're taken through a gorgeous old growth forest and eventually you start to climb various hillocks and rises until you reach the trail's end.

At one point about halfway through there is an absolutely gorgeous promontory, looking out against Colonial Peak and a heavily wooded valley. It's an ideal resting place for sure.

Eventually, the trail dips down past the hidden Thunder Lake (which is really a long pond), and rises up again to end at the eponymous Thunder Knob, which overlooks Diablo Lake. Rest here and absorb all that this perfect vision of nature has to offer, and then return to the trailhead, knowing that the way back is much, much easier.

hiking
Sunday, September 27, 2015

Nice trail and relatively easy hike. Good views of Diablo Lake along the way.

hiking
Saturday, September 26, 2015

Thunder Knob is a cool trail in the Diablo/Ross lake area. The hike has a little of everything from mountain creeks to an old growth forest covered in moss, and an alpine woods at 1800 some odd feet. Easy walk to stretch your legs after a trip on Rt. 20 that will not disappoint.

hiking
Thursday, July 16, 2015

Tuesday, May 26, 2015

hiking
Sunday, May 10, 2015

The Forest Service has installed the foot bridges. They have built new sturdy ones, but don't have the rustic character of the old ones. We started the hike around 6 pm, for a nice evening hike. The water level in the streams was very low for this time of year, the wildflowers are just starting to bloom, the mountains were majestic and Diablo Lake was stunning as always. We were able to just soak up the beauty from the top and enjoy the company of our group.