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Sourdough Mountain Trail

Difficult
 4.9 (12)

A great climb leading to some spectacular views.


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Map Key

9.2

Miles

14.9

KM

Point to Point

5,971' 1,820 m

High

896' 273 m

Low

5,199' 1,585 m

Up

4,038' 1,231 m

Down

19%

Avg Grade (11°)

61%

Max Grade (32°)

Dogs Unknown

Features Fall Colors · River/Creek · Views · Wildflowers · Wildlife

Description

This is a great trail, not too difficult but be prepared for a steady uphill!

The trail starts behind the old basketball court in the town of Diablo. Your route will start right up the mountain, and the trail stays true to its beginnings... up,up,up. The trail itself is in good condition, smooth and shaded for the first half or more. Then it becomes open and exposed for the rest of the trip. The last water source is sourdough creek, so fill up there or pay the consequences at the top!

The views from the summit have got to be some of the best in the whole of the North Cascades National Park. The views are well worth every drop of sweat it takes to see them.

Once you've enjoyed your fill of the summit, you can head down the backside of Sourdough Mountain. The trail on this side of the mountain is still plenty steep, but there will be spots where you'll get some respite. Enjoy the views of Ruby Lake as you work your way down the the water's edge, though the trail is heavily forested, and a clear view may be difficult to find.

From the end of this trail, you can spend the night at the Cougar Island Campground, or you can retrace your steps for a long return to Diablo.

Flora & Fauna

Bears, always bears.

Contacts

Shared By:

Chris Liebich

Trail Ratings

  4.9 from 12 votes

#222

Overall
  4.9 from 12 votes
5 Star
92%
4 Star
8%
3 Star
0%
2 Star
0%
1 Star
0%
Trail Rankings

#16

in Washington

#222

Overall
60 Views Last Month
4,037 Since Mar 1, 2016
Difficult

0%
0%
0%
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92%
8%

Photos

It was a tough climb but totally worth it for the 360 degree views.
Jun 28, 2018 near Diablo, WA
The view from the top of Sourdough Mountain.
May 2, 2017 near Diablo, WA
Panorama from the lookout. Does not do justice to the absolute beauty of this veiw..
Jun 13, 2016 near Stehekin, WA
The lookout is no longer open to the public for safety reasons...
Jun 13, 2016 near Diablo, WA
Ross Lake from about halfway up to the lookout on Sourdough Mountain.
Jun 13, 2016 near Diablo, WA

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Weather


Current Trail Conditions

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All Clear 24 days ago See History
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Check-Ins

Aug 13, 2020
Jayley Janssen
Oct 27, 2019
Cheylan Harris
Hiked to the peak Sunday afternoon. Cold and sunny day, snow for the last mile and a half or so — 6h 00m
May 29, 2019
Adamson Bryant
with Nathan 10.4mi
Sep 14, 2018
Kali Wraspir
Gorgeous day and views. The first 2 miles were pretty brutal but the view at the top made all the pain worth it!
Sep 8, 2018
Greg Seiver
11mi
Sep 2, 2018
Matt Voss
It’s a leg burner that awards the most spectacular views of the North Cascades that I’ve seen! 10mi
Aug 5, 2018
Geoff Pleiss
Jul 24, 2018
DeWayne Lyman
9.2mi