Best Gravel Cycling Routes in the Pacific Northwest

The best gravel bike routes in the Pacific Northwest are genuinely some of the most varied, challenging, and flat-out beautiful anywhere in the country — and I say that having ridden gravel in Colorado, Vermont, and across chunks of the Midwest. I moved to the PNW about six years ago and spent the first two seasons getting it completely wrong: wrong tires, wrong timing, wrong expectations about what “light rain” actually means out here. What follows is what I know now, organized by region, with the kind of detail I wish I’d had when I was eating mud on a Forest Service road outside North Bend wondering where exactly I’d gone wrong.

These aren’t every route worth riding. They’re the ones I keep coming back to, the ones I recommend to visiting riders, and the ones that represent different flavors of what the PNW does best — open agricultural country, dense fir forest, river canyon, and everything in between. I’ve included GPS coordinates where they matter most, typical surface conditions, and honest notes about timing, because out here, timing is most of the battle.

The Palouse — Eastern Washington

Stumbling onto the Palouse for the first time feels like someone picked up the Midwest and improved it substantially. Rolling wheat fields that go on and on, dirt and gravel county roads connecting small towns with grain elevators and diners that still serve coffee in ceramic mugs. It’s one of those places where you can actually see the route ahead of you from a ridgeline — 20 miles of it, just unspooling across the hills. I did my first Palouse loop in September of 2019 and turned right back around and started planning a return trip before I’d even unloaded my bike from the car.

Route Overview and Distance

The classic starting point is Pullman, Washington, home of WSU and a genuinely good coffee shop on Grand Avenue called Pita Pit’s neighboring café — look for the blue awning. From Pullman, most riders string together 60 to 80-mile loops using county road 7700 and the roads north toward Palouse and Garfield. The surfaces run from packed gravel to chip seal to honest dirt, and which one you’re on changes by the mile. A Garmin Edge 530 or any GPX-capable computer helps here because cell service drops out completely in the wheat fields between Garfield and Tekoa.

Elevation is surprisingly meaningful. These aren’t flat plains — they’re ancient loess hills, and the roads roll in a way that puts 4,000 to 5,500 feet of climbing into an 80-mile day before you’ve noticed it happening. My single biggest mistake on the Palouse was underestimating the cumulative grade. I was running a 1x drivetrain with a 40t chainring and an 11-42 cassette on my Salsa Warbird, which was fine, but just barely. If you’re not a strong climber, run a 44t or 46t rear max cassette or just accept that the last 20 miles will hurt.

Timing — June and October Are the Windows

June before harvest and October after it are the two windows that matter. June gives you green fields and manageable temperatures in the 60s to low 70s. October strips the fields and turns everything gold and brown and huge against the sky. Both are correct. July and August are also rideable but hot — 90°F days are common, and there’s minimal shade on these roads. March and April are technically possible and frequently miserable, with mud that packs into your fenders and effectively stops your wheels from turning. I’ve done it. Would not recommend.

Lodging: the Nendels Inn in Pullman runs around $85 to $110 a night and has a parking lot big enough to unload a bike rack without drama. The Hampton is also there and costs more for roughly the same experience.

Tiger Mountain Loop — Seattle Area

Probably should have opened with this section, honestly, since it’s the most accessible route here for anyone based in or visiting Seattle. Tiger Mountain sits about 20 miles east of the city in the Issaquah Alps, and USFS roads lace through the forest in a way that’s been quietly beloved by the local gravel community for years. The trail network there is heavily used by mountain bikers and hikers, but the forest roads — maintained gravel and dirt fire roads — are wide open and almost always quiet.

Getting There and Route Shape

You can drive directly to the Tiger Mountain State Forest trailhead off SR-18 and start from the parking area, or — and this is the better option if you’re staying in Seattle — ride the Burke-Gilman Trail out to Issaquah and build the whole thing into a 50-mile day with door-to-door gravel. The loop itself using West Side Road and the forest roads east of it runs 35 to 50 miles depending on which connectors you include, with 3,000 to 5,000 feet of elevation again depending on your route choices.

Surfaces are mixed. The main USFS road corridors are packed gravel and drain reasonably well even after rain. The doubletrack connectors through the upper forest get chunky and loose in spots — I run 700x40mm tires on most routes out here, but Tiger Mountain is the one place where I’ve considered going to 42mm or even 45mm. The Panaracer GravelKing SK in 40mm handles it fine. The WTB Riddler 37mm does not — too narrow and the knobs aren’t aggressive enough for the upper road conditions in November.

Elevation and What to Expect

The climbing on Tiger Mountain is not subtle. The main ridge roads push up steep sustained grades — nothing technical, but 8% to 12% grades on loose gravel that punish riders who attack them rather than sitting and spinning. Views open up on clear days toward Rainier to the southeast and the Olympics to the west. Foggy days are their own thing entirely, and common. Trees close in overhead on the descent back to Issaquah, the road narrows, and you earn those miles. Best months are May through June and September through early November. July and August are fine but popular with hikers.

One detail worth knowing: the USFS gate on the upper road near the radio tower is sometimes closed on weekdays for maintenance work. No consistent schedule that I’ve found. Just be prepared to adjust your route or turn back. It’s happened to me twice.

Columbia River Gorge — Oregon Side

Driven by years of frustration with how underrepresented the Oregon side of the Gorge is in cycling media, I finally put together a proper route profile for this area in the spring of 2022, and it immediately became one of my most-ridden. The Washington side gets the lion’s share of the cycling attention — the Historic Columbia River Highway is gorgeous and well-documented — but the Oregon side’s gravel roads through the cherry and pear orchards above Hood River are something else entirely.

The Route — Hood River to Mosier and Beyond

Starting in Hood River and heading east, you climb out of town on gravel roads through orchards toward Mosier, then connect with the Cherry Heights Road network and the ridge roads above the Gorge. Total distance on the main loop runs 50 to 70 miles depending on your extension choices, with 4,500 to 6,500 feet of climbing. The views down into the Columbia River are extraordinary — wide open, with Rainier and Hood framing the scene on clear days.

Surfaces are mostly packed gravel county roads maintained by Hood River County and Wasco County, mixed with some chip seal connectors and a few stretches of honest dirt. The cherry orchards mean agricultural traffic in June and July — flatbed trucks moving harvest equipment on some of these roads — so early morning starts make sense during peak harvest. The orchards also mean that mid-May is absurdly beautiful, with blossoms everywhere and almost no traffic. That’s the ride I keep coming back for. Mid-May, start at 7am from Hood River, climb to the Cherry Heights loop, come back on the Rowena Plateau roads, descend into Mosier, stop at the Mosier diner for pie, ride back along the Historic Highway. Call it 58 miles. It’s close to perfect.

Logistics and Road Notes

Hood River has excellent cycling infrastructure now. Discover Bicycles on Oak Street does tube swaps and quick mechanic stops. Gorge Transload has a basic parking lot near the waterfront that works for a start point. Wind is the major variable in the Gorge — the area funnels westerlies through the canyon and a headwind from the west on the return leg can turn an easy last 15 miles into a genuine sufferfest. Check the Hood River weather station before you go. Anything over 15mph from the west means you should mentally add 45 minutes to your return time.

I flatted here once on a piece of chip seal debris above Rowena — pinch flat, not a thorn — and it took 20 minutes to find a signal strong enough to figure out where I actually was. Carry two tubes and a pump, not just one tube and a CO2 cartridge. CO2 cartridges and cold Gorge air don’t always cooperate the way you want them to.

Seasonal Tips for PNW Gravel

The Pacific Northwest does not behave like one climate. Eastern Washington — the Palouse — is a semi-arid high desert that gets cold winters and hot summers with limited rain. The west side — Tiger Mountain, the Seattle area — is a temperate rainforest that’s wet from October through May and briefly, beautifully dry from July through September. The Gorge is its own microclimate driven by the pressure differential between the coast and the high desert. These places require different preparation in different months.

Rain Gear — What Actually Works

A Showers Pass Elite 2.1 jacket at around $280 is the benchmark for west-side PNW riding. It’s waterproof enough to handle a full day in the rain without soaking through, breathable enough that you don’t cook on the climbs. The Pearl Izumi AmFIB Lite bib tights at around $200 are the bottom half solution. Cheaper alternatives exist and all of them fail in sustained heavy rain above 2,000 feet. I’ve tested this extensively and involuntarily.

Fenders are not optional on the west side. SKS Raceblade Pro XL fenders in 45mm clearance work on most gravel bikes with 40mm tire clearance. Without fenders you’ll be covered in wet grit within 10 minutes of a damp road. This is not a comfort complaint — it’s a visibility and mechanical complaint. Grit in your eyes on a descent is dangerous. Grit in your drivetrain every ride destroys components in a season.

Mud Tires — When and Which Ones

From November through March on the west side and in shoulder seasons everywhere, mud tires make a real difference. The Teravail Cannonball 700x42mm handles PNW mud better than anything else I’ve run at this width. The WTB Venture 700x40mm is a close second and slightly faster on packed gravel when things dry out. Running tubeless with Stan’s Race Sealant at 28 to 32psi front, 30 to 35psi rear for a 160-pound rider — go lower if you’re lighter, higher if you’re carrying a loaded setup.

Best Months by Region — A Straight Answer

• Palouse (Eastern WA): June and October. Full stop.
• Tiger Mountain (Seattle Area): May–June and September–October. July and August work but get busy.
• Columbia River Gorge (Oregon Side): Mid-May for blossoms, September for harvest light, October for fall color. Avoid peak summer heat in July–August above 1,500 feet.
• General West Side: July and August are the reliable dry window. Everything else requires acceptance of rain and appropriate gear.

One More Thing Worth Knowing

Navigation apps matter more in the PNW than in most places. Cell service drops out on forest roads, agricultural roads, and canyon walls with no warning. Download your routes offline before you leave. Ride with GPS in offline mode, not relying on cell signal for the map. Komoot handles PNW gravel routing better than Strava in my experience — the surface type data is more accurate, and the elevation profiles are more honest about what’s actually on the road versus what satellite imagery suggests is there.

The PNW gravel scene has grown enormously in the last five years, but these roads still feel quiet compared to the organized chaos of California or Colorado gravel events. That’s the thing worth protecting. Respect the land access, pack out everything, and close the gates you find closed. These roads stay open because the farmers and land managers who control access haven’t had reason to shut them down. Let’s keep it that way.