Help keep our trails and parks open during COVID-19 by committing to social distancing. Some trails or park services may be closed this weekend so check with local authorities before heading out.
Learn more

Diablo Lake Trail [CLOSED] is a 7.5 mile heavily trafficked out and back trail located near Marblemount, Washington that features a lake and is rated as moderate. The trail offers a number of activity options and is best used from April until September. Dogs are also able to use this trail but must be kept on leash.

Distance: 7.5 miles Elevation Gain: 1,538 feet Route Type: Out & Back

dogs on leash

kid friendly

hiking

nature trips

walking

bird watching

running

forest

lake

river

views

wild flowers

snow

closed

As of May 28, 2020, users have reported that part of the trail is CLOSED. Please see the park's website for up to date information before visiting. This is an out and back trail with mild elevation gain that takes you through interesting landscapes, including rainforest-like vegetation, rocky fields, dry open areas and the Skagit River. About halfway down, the trail leads along the top of a gorge, from which you can look down at the turquoise waters of Lake Diablo. At the end of the trail the Ross Dam is visible. This trail does not have the most beautiful views of any hike in the area, but the varied vegetation keeps things interesting.

hiking
rocky
3 days ago

Great trail. Half way up is the best view! Water is beautiful. Parked right in front of the trail which you have to cross the dam. Dog friendly.

hiking
3 days ago

Did this trail on Friday. Parking is blocked off, so we parked along the main road and walked about a mile to the trailhead. (There were plenty of cars who drove around the barricade to park near the trailhead though.) Nice views of Diablo Lake along the trail, but the overlook is not impressive.

hiking
10 days ago

Stunning

camping
10 days ago

Amazing experience, would definitely go again. Camped at colonial creek with my family and view was great, hiking trails were open and weather was beautiful. Must see place, color of the water looks unreal.

hiking
12 days ago

Haven’t hiked this trail but do I need to take a water taxi to complete this hike? Thanks!

hiking
closed
23 days ago

Beautiful drive! Unfortunately, the trail is still closed off as of 6/13/20

hiking
1 month ago

Drove to the overlook on Monday June 1st and passed by the trailhead. It is still closed off. Overlook was still a treat and you can’t beat that drive!

hiking
1 month ago

Drove 3 hours to get here! Trailhead closed off and no way of getting around it!

hiking
closed
1 month ago

Don’t go yet. I drove 2 hours to get here yesterday and got turned away by the park rangers. TRAIL IS CLOSED

hiking
1 month ago

Is this trail open now?

hiking
blowdown
closed
3 months ago

hiking
3 months ago

If you’re hoping for some good views of the lake, this isn’t the hike for you. Some trees down on the trail.

hiking
8 months ago

We got off the trail and ended up on a road that ended at Buster Brown Campground. Beautiful day and nice hike.

hiking
9 months ago

This is a really good trail to do in between harder hikes you may have planned for the North Cascades area. It was quiet, the trail was well maintained, there's not that much elevation gain, etc. If you want a good view of the lake, the lookout will be more ideal. But we did this trail on our last day in the park and at that point we had already spent a decent amount of time already staring at Diablo Lake from the lookout.

hiking
10 months ago

The view at the top was very disappointing! It is also very tricky to get on to the right path for the trail! But overall it was a pretty decent hike! Once you get to the top you can either go down through the normal trail or choose the other path that will lead you down to the water and you can pay a ferry ($10 per person/only cash) to take you back to the parking lot.

hiking
10 months ago

If you want the iconic view you have to drive to the lookout. You’ll see some patches of the lake between the trees on this trail. Beautiful but disappointed we had to drive to ultimately get the best view

hiking
10 months ago

Really beautiful trail! It’s easy to miss the beautiful look out and walk to dam but whole thing is amazing and fairly flat trail!

hiking
bugs
rocky
scramble
10 months ago

hiking
11 months ago

Loved! The water is freezing, but still refreshing after the hike. If you have a kayak, definitely bring it! The parking area is right on the lake.

hiking
11 months ago

Amazing views!!

hiking
11 months ago

Save yourself the time, drive hwy 20 and visit the overlooks. The views from the road are way better. Didn't get to see much on this hike. The few times there was an opening in the trees, the natural landscape was marred by power lines or dams. I was very disappointed.

hiking
11 months ago

Wasn't impressed but did see some good wildlife

hiking
11 months ago

Very unimpressed with the outcome of this trail. If you want good views of Diablo Lake, go to the Overlook it is much better than anything on this trail. You see Diablo in the distance through the trees, and the views are nice for a couple miles, but the trail abruptly ends at the end of a bridge next to a gravel road. My group and I were very disappointed, would recommend against it.

hiking
bugs
rocky
11 months ago

We did this hike yesterday, 7/9. I agree that the trail does have some pretty views about 2.5 miles in, but the end of the trail is pretty disappointing as it’s just a view of Diablo Dam. The trail is mostly shaded, and the trees, ferns, and moss are beautiful to look at, but I would recommend looking for a different trail if you want an overlook of the lake.

hiking
rocky
Tue Jul 09 2019

hiking
Mon Jul 08 2019

I’m with you Robert, Jess, I think you may have gotten this confused with Diablo Lake in CA, thankfully we didn’t see any rattlers on the trail today! However, we did come in contact with a sow and her cub down a sag on our descent! We also saw multiple deer which were absolutely stunning, even a pure white doe with babies! We loved the conditions of this trail and found it lovely passing through the coniferous forests, and over the rocky terrain, especially with stunning blue Lake Diablo peeking through the majority of the way. However, we were rather disappointed with the end of the hike at the dam. We were looking for a more climatic viewpoint, however, the views about 2.5 miles in are truly astonishing and well worth the hike in our opinion. Cheers!

Showing results 1 - 26 of 258