Cascade Concrete Trail

The rusted remains of a Civilian Conservation Corps camp sit where Douglas fir and western hemlock have grown through concrete foundations, forty feet from where Sulphide Creek cuts through granite bedrock. This is what you’ll find at mile 14 of the Cascade Concrete Trail—a 28-mile backcountry route that threads through Washington’s Mount Baker-Snoqualmie National Forest, climbing 3,200 feet through old-growth remnants to alpine meadows that most drivers never see. The trail follows abandoned logging roads from the 1930s, where CCC crews once built infrastructure that nature has been reclaiming for nearly a century.

You’ll need high-clearance 4WD minimum for this moderate-rated run, though the creek crossings and loose rock sections will test your clearance and approach angles. The trail starts near Concrete, Washington, and winds northeast through dense forest before opening into subalpine terrain at 4,800 feet elevation. Multiple water crossings punctuate the route—some seasonal, others permanent—with Sulphide Creek being the deepest at roughly 18 inches during normal summer flow. A Forest Service permit is required, and cell service disappears within the first five miles. Plan for two days minimum, as this isn’t a trail you rush through. The rocky sections and tight switchbacks through old-growth forest demand attention, especially when loaded with camping gear.

July through September offers the only reliable window when snow clears from the higher elevations and creek levels drop to manageable depths. Earlier or later in the season, you’re gambling with conditions that can turn dangerous fast. Dispersed camping is allowed throughout the forest, though the best spots cluster around the historic CCC ruins where previous campers have established fire rings among the concrete footings. Fuel up in Concrete—there’s nothing after that for the duration of the trail.

This isn’t a trail that delivers Instagram moments or technical rock crawling bragging rights. What it offers is solitude in genuine wilderness, the strange satisfaction of finding human history slowly disappearing into the forest, and camping under old-growth canopy that most of Washington’s backcountry has lost to chainsaws. You’ll come out with dirt under your fingernails and a different perspective on what the Pacific Northwest looked like before clear-cuts and ski resorts carved it up.

Q: How long does the Cascade Concrete Trail take to complete?

The 28-mile Cascade Concrete Trail requires a minimum of two days, allowing time for the challenging terrain and mandatory overnight camping in the backcountry.

Q: What type of vehicle do I need for this trail?

You need high-clearance 4WD minimum for the Cascade Concrete Trail due to creek crossings, loose rock sections, and steep approaches that will challenge ground clearance.

Q: When is the best time to run the Cascade Concrete Trail?

July through September is the only reliable season for the Cascade Concrete Trail when snow clears from elevations up to 4,800 feet and creek levels drop to safe crossing depths.

Q: Are permits required for the Cascade Concrete Trail?

Yes, a U.S. Forest Service permit is required for the Cascade Concrete Trail in the Mount Baker-Snoqualmie National Forest.

Q: Is there cell phone service on the Cascade Concrete Trail?

No cell service exists on the Cascade Concrete Trail—coverage disappears within the first five miles and doesn’t return for the entire 28-mile route.

Q: Where can I camp on the Cascade Concrete Trail?

Dispersed camping is allowed throughout the forest along the Cascade Concrete Trail, with the best established sites located around the historic CCC ruins at mile 14.

Have a dirty day.