Pacific Northwest weekend: Oregon Dunes, Tillamook and Walker Valley

The Pacific Northwest rides year-round at low elevation, but August is the only time the forest systems are reliably dry, and that changes what is worth driving to. This weekend covers three places that show the region's range: the coastal dunes, a big state-forest trail network in Oregon, and a compact Washington system with a few serious 4x4 sections.

Oregon Dunes National Recreation Area, managed by the Forest Service as part of Siuslaw National Forest, stretches some 40 miles along the coast with several designated open riding areas. The big, steep faces are near Winchester Bay. It rates around a 4, with difficulty set by dune size and sand skill rather than obstacles. Oregon ATV permits and whip flags are generally required, and day-use fees apply at staging areas. Confirm conditions with the managing agency first.

The dunes stay open year-round, but parts of the area close seasonally to protect snowy plover nesting, and those closures are posted rather than obvious on the ground. Read the signs at the staging area. Coastal sand is often damp and heavy in the morning and softer by afternoon; if you are new to it, the flat, open areas near staging are the place to learn how a machine behaves before you point it at a face.

Tillamook State Forest OHV Trails, run by the Oregon Department of Forestry, is the largest forest system in the region: over 250 miles split across Browns Camp, Jordan Creek and Diamond Mill, marked easiest through most difficult, and rated a 5 overall. An Oregon ATV operating permit is typically required and some staging areas charge a day-use fee. Confirm conditions with the managing agency first.

Tillamook is open all year, but winter rain turns much of it into deep mud and August is when the harder trails are actually rideable at their marked grade. Each of the three areas suits a different machine, so pick the staging area to match the group rather than expecting to ride everything from one spot. Mixed traffic is normal here, so expect dirt bikes on the same trails as UTVs and give way on the narrow sections.

Walker Valley ORV Area, near Mount Vernon in Washington, is managed by the Washington Department of Natural Resources. It is a compact mix of motorcycle, ATV and 4x4 trail, rated a 5, with a few 4x4 rock sections that are genuinely serious for a full-size rig. A Discover Pass is generally required to park, and ORV registration applies to unlicensed vehicles. Confirm conditions with the managing agency first.

Walker Valley is year-round at low elevation, and even in August the shaded rock stays greasy. Full-size trucks and SUVs on the 4x4 loops should have rocker protection and a plan for getting turned around; some of the rock sections are one-way in practice because there is nowhere to reverse out. Recovery gear and a second vehicle matter more here than on the dunes.

The region's constant is moisture, even in summer. After any of these, check brake pads, grease the zerks and look at the air filter, which takes a beating on the dunes. Torque values, capacities and pressures for all of that are in your service manual.

Fire restrictions are the thing to check this month. Late-summer burn bans can close forest systems or restrict staging-area camping at short notice, and spark arrestors are required in the forests regardless. Confirm with the managing agency before you go, and carry a shovel and an extinguisher.