Cascade Concrete Trail
Depression-era concrete meets Cascade wilderness
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.
Trail Specs
| Difficulty | Moderate |
|---|---|
| Trail Type | Backcountry |
| Surface | Dirt |
| Features | Camping, Historic, Remote, Scenic, Water Crossings |
| Length (miles) | 28 mi / 45.1 km |
| Duration | 2 days |
| Max elevation (ft) | 4800 ft |
| Best season | July-September |
| Minimum vehicle | High-clearance 4WD |
| Nearest town | Concrete, Washington |
| Land manager | U.S. Forest Service |
| Permit required | Yes |
| Cell service | None |
| Water crossings | Yes |
| Dispersed camping | Yes |
| Official sources | fs.usda.gov |
| Start coordinates | |
| End coordinates | |
| Copy both for Google Maps directionsClick to copy the directions URL · or open it directly in a new tab | |
| Find on Google | Search on Google → |
Location
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Frequently asked questions
Can a stock Tacoma or 4Runner handle this trail, or do I need a lifted rig?
A stock high-clearance 4WD like a Tacoma or 4Runner is the minimum — this trail earns that rating honestly. Low-range is required for the steeper logging road sections and creek crossings. Lifted rigs will have more margin, but a bone-stock rig driven carefully will make it through.
When does the Cascade Concrete Trail actually open, and what closes it?
July through September is your window — snowpack at 4,800 ft keeps the upper sections buried well into summer most years. Mud season in spring turns the logging road surface into a mess that chews up the trail and your rig. Check with Mt. Baker-Snoqualmie National Forest before you go, especially in early July.
Do I need a permit to run this trail or camp along it?
Yes, a permit is required — contact the Mt. Baker-Snoqualmie National Forest directly at fs.usda.gov/mbsnf for current requirements, as permit systems on USFS lands in Washington have been evolving. A Northwest Forest Pass or America the Beautiful Pass may also be required depending on trailhead access.
What's the hardest section, and what should I actually be ready for?
The water crossings are where most people will feel the pucker factor — they're not optional and can run fast with snowmelt in early season. The logging road climbs are rutted and loose in sections, demanding confident low-range driving. Nothing here is extreme, but complacency on a two-day route 28 miles into the backcountry is how trips go sideways.
There's zero cell service out here — how far is the nearest gas and what's the fuel range situation?
Concrete, Washington is your last stop for fuel before this trail, and you need to treat it as exactly that. With 28 miles of backcountry driving plus your approach and exit, budget for at least 60-80 miles of rough-road fuel consumption and carry a spare jerry can if your tank is under 20 gallons. Nobody is coming to bring you gas out here.
Trail track
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