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Sourdough Mountain Trail

Difficult

Trail

9.2 mile 14.9 kilometer point to point
Difficult

Elevation

Ascent: 5,199' 1,585 m
Descent: -4,038' -1,231 m
High: 5,971' 1,820 m
Low: 896' 273 m

Grade

Avg Grade: 19% (11°)
Max Grade: 61% (32°)

Dogs

Unknown
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Trail shared by Chris Liebich

A great climb leading to some spectacular views.

Chris Liebich

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.

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We need help with the following missing trail information:

Family Friendly, ADA Accessible, Need to Know, Dogs Allowed

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Check-Ins

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
Sep 2, 2017
Caleb Thompson
4.5mi
Sep 1, 2017
Caleb Thompson
4.5mi

Trail Ratings

  4.9 from 11 votes

#185

Overall
  4.9 from 11 votes
5 Star
91%
4 Star
9%
3 Star
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1 Star
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Trail Rankings

#15

in Washington

#185

Overall
70 Views Last Month
3,285 Since Mar 1, 2016
Difficult

0%
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50%
42%
8%

Photos

Evening at Sourdough Mountain Camp in North Cascades National Park
Sep 3, 2017 near Diablo, WA
Above Sourdough Mountain Camp in North Cascades National Park
Sep 3, 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
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
Ross Lake from about halfway up to the lookout on Sourdough Mountain.
Jun 13, 2016 near Diablo, WA

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