Olympia to Winthrop Road Trip: Mountains, Gorges & Small Towns

This route from Olympia to Winthrop measures 260 miles and takes roughly 5.5 hours without stops—but you will want to stop. The drive traces the southern flank of Mount Rainier, follows the Cowlitz River, then climbs over White Pass before descending into the Methow Valley. Unlike the direct I-90 corridor, this expedition offers solitude and raw landscapes.

A curious fact: the stretch from Packwood to Winthrop traverses the ancestral lands of the Yakama Nation and passes through the Gifford Pinchot National Forest, one of the oldest national forests in the United States. The road itself, WA-12 and WA-20, is a designated National Scenic Byway in segments.

Travelers often ask: is it worth driving Olympia to Winthrop? The answer is a confident yes if you crave mountain vistas, quiet forests, and small-town character. The journey reveals the state’s diverse geography—from the temperate rainforests of the west to the arid pine savannahs of the east. For tips on structuring your own adventure, see how to find the best stops and hidden gems between cities.

The route is almost entirely two-lane highway. Begin on US-101 south from Olympia, then turn east onto US-12 at exit 88. Follow US-12 east to Yakima, then north on I-82 and US-97 to Ellensburg, and finally WA-20 east over Blewett Pass to Winthrop. Cell service is spotty beyond Packwood, so download maps.

• Best stops Olympia to Winthrop: Mount Rainier viewpoints, Cowlitz River, White Pass, Rimrock Lake, Yakima River Canyon, Ellensburg, Blewett Pass, Methow Valley.
• How long to drive Olympia to Winthrop: Plan 5.5 hours driving time, but budget 8-10 hours with stops.
• Fuel: Last gas before White Pass is in Packwood; next gas is in Naches (~80 miles). Fill up in Packwood.
• Food: Pack lunches; few restaurants along the way. Packwood has diners; Yakima and Ellensburg have full services.

Road quality: US-12 is well-maintained through the forest, but watch for frost heaves in spring. WA-20 over Blewett Pass is narrow and winding in places. Snow is possible from November to April; carry chains.

Infrastructure safety: US-12 has occasional guardrails but no shoulders in sections. Drive with headlights on; wildlife (deer, elk) cross at dawn/dusk. Snow tires are mandatory when winter conditions exist. Blewett Pass has hairpin turns; lower your speed.

• Hidden off-route spot: the historic town of Roslyn, 5 miles north of Ellensburg, was the filming location for “Northern Exposure.” Its cemetery and coal-mining museum are quirky and quiet.
• Fatigue management: use the rest areas at Rimrock Lake (picnic tables, toilets) and the Yakima River Canyon pullouts. Ellensburg’s Central Washington University campus offers open green spaces to stretch.
• Pet-friendly framework: Most national forest lands allow dogs on leash. Packwood’s pet-friendly motels are limited; reserve ahead. Winthrop’s hotels welcome pets with a fee.
• Family and child suitability: Kids will enjoy the Oak Creek Wildlife Area (elk feeding station in winter) and the Yakima Valley Trolley (historic streetcar rides). The Winthrop Rink offers skate rentals in winter.

Climatic conditions: The west side is humid and cool; east of the crest, it becomes arid and hot in summer. White Pass can be 10-15°F cooler than Olympia. Pack layers. The best time for clear skies is July through September; October offers autumn color.

Mount Rainier dominates the first half of the drive. From Morton, the mountain appears sudden and immense. The Cowlitz River runs alongside US-12, its milky blue water fed by glaciers. Near Packwood, the Gifford Pinchot National Forest offers short hikes to waterfalls and old-growth stands.

• UNESCO note: Mount Rainier National Park is a UNESCO World Heritage Site (candidate), though the route skirts its boundary. The park's inclusion recognizes its glacial system and subalpine meadows.
• White Pass: at 4,500 ft, this is the highest point on US-12. In summer, wildflowers blanket the slopes; in winter, the ski area operates.
• Yakima River Canyon: a Bureau of Land Management area with towering basalt cliffs and a free-flowing river. Watch for eagles and bighorn sheep.
• Methow Valley: Winthrop’s gateway. The valley is a patchwork of orchards, hay fields, and pine forests, with the Methow River running clear.

Local commerce: Winthrop’s boardwalk is modeled after a Western frontier town. Shops sell handmade leather goods, local art, and smoked meats. In Yakima, the farmers market offers apples, hops, and wine. The Cascade Range’s rain shadow creates a dry climate east of the crest, ideal for fruit growing.