Washington is packed with lakes that look like someone turned up the saturation filter, from deep glacial blues to wild, tropical turquoise.
And this Washington blue lakes road trip is your ultimate guide to seeing the best of the best.

We’re talking bright alpine gems, mirror-like reflections, mountain backdrops, and hikes that lead to jaw-dropping views you’ll never forget.
Some of these have some pretty strenuous hikes, but others are super accessible (so don’t worry if you’re not much of a hiker).
1. Ross Lake (North Cascades)

Ross Lake is a 23-mile-long reservoir, located just south of the Canadian border and within Ross Lake National Recreation Area.
It’s known for its clear, deep blue water and the way it stretches beneath towering peaks like Jack Mountain and Hozomeen Mountain.
You can kayak across the lake, camp at boat-in sites, or hike to it on the Ross Dam Trail, which drops 500 feet from Highway 20.
There’s no road directly to the lake itself, so you either hike in, paddle in, or take a tiny boat taxi from Diablo Lake!
2. Diablo Lake (North Cascades)

Just south of Ross Lake is Diablo Lake, where the water looks like it was dyed with a giant turquoise highlighter.
The lake gets its bright glow from glacial silt, and the overlook on Highway 20 is the best place to see it.
If you’re up for an adventure, bring your own kayak or join a guided boat tour to explore little islands and waterfalls hidden along the cliffs.
You can also hike the Diablo Lake Trail, a 7.6-mile round trip with sweeping views and a 1,300-foot elevation gain.
3. Blue Lake (North Cascades)

When it seems like the lakes can’t possibly get any bluer, Blue Lake shows up looking like a mountain postcard.
You can reach it on a short 4.4-mile round-trip hike off Highway 20, with about 1,050 feet of elevation gain and alpine scenery the entire way.
The water is so clear you can see rocks on the bottom, and in early fall, the golden larches around the lake totally steal the show.
This is one of those spots where you’ll want to plop down, eat your trail snacks, and just stare for a while.
4. Lake Chelan (Central Washington)

Now it’s time for Lake Chelan, where it’s all about sunshine, boat rides, and serious vacation energy.
This 50.5-mile-long lake is one of the deepest in the U.S. (1,486 feet!), stretching from the resort town of Chelan to the remote village of Stehekin.
You can swim, paddleboard, go wine tasting, or hop on the Lady of the Lake ferry for a scenic ride through steep mountain canyons.
And if you make it to Stehekin, don’t skip the Stehekin Pastry Company, where the giant cinnamon rolls alone are worth the boat ride.
Related Reading: The Perfect Lake Chelan Road Trip Itinerary
5. Colchuck Lake (Leavenworth area)

Next up is Colchuck Lake, a showstopper with icy blue water framed by the sharp granite spires of Dragontail and Colchuck Peaks.
It’s a challenging 8-mile round-trip hike with about 2,280 feet of elevation gain.
The trail is rocky, rooty, and steep in some sections, so wear sturdy shoes, pack snacks, and consider bringing trekking poles.
What waits at the top is pure alpine beauty, though the water is best admired from shore unless you like freezing temps.
6. Robin Lakes (Leavenworth area)

If you’re ready to level up the adventure and earn some bragging rights, your next stop is Robin Lakes.
The hike is about 12 miles round-trip with over 3,000 feet of elevation gain, where you’ll pass by Tuck Lake on the way.
And yes, your legs will feel it, but the twin lake payoff is worth it!
Located high in the Alpine Lakes Wilderness, the lakes are famous for their clear water, wide granite slabs, and unreal mountain reflections.
This is a popular spot for overnight backpacking, so get a permit, bring your tent, and get ready to wake up in one of the dreamiest spots in Washington.
7. Blanca Lake (Central Cascades)

Up next is Blanca Lake, where glaciers and minerals team up to create some of the brightest teal water you’ll ever see.
The 7.5-mile round-trip hike climbs 3,300 feet through nonstop switchbacks, but the views at the top are next-level.
The lake sits in a rocky bowl surrounded by Monte Cristo, Kyes, and Columbia Peaks, with Columbia Glacier feeding its incredible color.
Don’t forget bug spray and plenty of water because this trail is a beast, and conditions can be rough, especially in the summer.
8. Lake Crescent (Olympic Peninsula)

Finally, there’s Lake Crescent, where things get a little more chill, but the views are just as stunning.
This glacially carved lake in Olympic National Park is 624 feet deep, surrounded by thick forest and misty mountain ridges.
The water is so clear it feels like looking through glass, with every detail visible beneath the surface.
You can rent a kayak from Lake Crescent Lodge or jump in for a swim at the beach by Fairholme Campground.
If you prefer to hike, try the 1.8-mile out-and-back trail to Marymere Falls—a 90-foot stunner tucked in the mossy woods.
Related Reading: The Perfect Lake Crescent Weekend Itinerary
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