Mt. Hood Scenic Byway

Troutdale to Hood River

Northern Oregon · Oregon · United States

Key measurements

Distance

105.3 miles

Elevation gain

10,680 ft

Elevation loss

10,554 ft

High point

6,484 ft

Low point

31 ft

Net change

119 ft (32 ft to 151 ft)

Surface

Paved

Route type

point-to-point

Route Overview

This 105-mile point-to-point route begins at the western entrance of the Columbia River Gorge in Troutdale and sweeps south and east around the massive volcano of Mount Hood before terminating at the Columbia River in Hood River. Starting near sea level in the lowland river margins, the route initially winds through the agricultural nursery country and river bluffs east of Portland. It then joins the Mount Hood Highway (US-26), ascending through dense Douglas-fir rainforest into the high Cascades.

The midsection climbs to nearly 6,500 feet via side spurs onto the slopes of Mount Hood—including the subalpine ascent up the Timberline Highway—before picking up Oregon Route 35. The final leg curves around the mountain's eastern shoulder and drops steadily through the fruit orchards of the Hood River Valley, completing a dramatic cross-section of Pacific Northwest alpine and rain-shadow geography.

Key Segments & Geographic Transitions

Lower Sandy River Basin Outlet — Miles 0.0–0.5 Starting just south of the Columbia River near Troutdale, this brief opening stretch along Northeast Jordan Road navigates the low-lying alluvial flats near the mouth of the Sandy River.

Agricultural Foothills & Nursery Country — Miles 6.2–11.7 Crossing into Southeast Lusted Road, the landscape opens into rolling agricultural benchland dominated by commercial tree nurseries, berries, and small farms situated between the Sandy and Clackamas river drainages.

Orient Connector — Miles 11.8–12.8 A short transition along Southeast Hudson Road bridges the rural nursery holdings with the higher canyon bluffs, shifting direction south toward the Sandy River basin.

Sandy River Bluff Traverse — Miles 12.9–14.6 Southeast Bluff Road skirts the edge of high river bluffs above the Sandy River gorge, offering brief glimpses through timbered stands before connecting to the main mountain corridor.

Mount Hood Highway Approach — Miles 17.1–19.6 Joining US-26, the road expands into a primary arterial corridor as it leaves the eastern Portland suburban fringe and enters the outer foothills of the Cascade Range.

Cascade Range Foothills Ascent — Miles 21.7–33.6 Continuing east on US-26 past Sandy, the route climbs steadily through heavily forested foothill terrain, following the valley of the Salmon and Zigzag rivers through communities like Brightwood and Welches.

Subalpine River Canyon Climb — Miles 34.5–43.5 As US-26 steepens toward Government Camp, the surrounding forest transitions from mixed hemlock and cedar to dense subalpine fir. The corridor narrows as it tracks up the western slope of Mount Hood.

Timberline Highway Spur — Miles 45.5–56.4 Diverting onto OR-173 (Timberline Highway), this out-and-back climb ascends Mount Hood's southern flank to Timberline Lodge, reaching the high point of the route near 6,484 feet amidst exposed volcanic alpine terrain and permanent snowfields.

Mount Hood Eastside Traverse — Miles 58.3–64.7 Transitioning onto OR-35, the route rounds Barlow Pass and cuts across the rugged eastern shoulder of the mountain, crossing glacial runoff streams and subalpine meadows.

Mount Hood Meadows Approach — Miles 71.1–72.6 A brief high-elevation spur along Mount Hood Meadows Road accesses the ski area basin on the mountain's southeastern face before returning to the main highway downhill.

Hood River Valley Descent — Miles 73.1–99.8 OR-35 plunges north, leaving the dense alpine timber behind as it follows the East Fork Hood River down into the wide, sunlit Hood River Valley. The terrain shifts rapidly into extensive pear and apple orchards around Parkdale and Mt. Hood.

Columbia River Gorge Terminus — Miles 100.4–105.2 The final stretch of OR-35 descends through the lower canyon of the Hood River, terminating along Old Columbia River Drive at the edge of the Columbia River Gorge.

Seasonal & Environmental Context

This route features an extreme elevation differential, rising from approximately 30 feet above sea level at the start and end to 6,484 feet at Timberline Lodge. Consequently, weather conditions vary drastically along the drive.

Snow and ice are common on the upper reaches of US-26, OR-173, and higher portions of OR-35 from late autumn through spring. OR-173 can experience severe winter conditions and high winds well after the lowlands have cleared. Summer brings dry, warm conditions, but riders crossing from the western side of the Cascades to the Hood River Valley will experience noticeable temperature shifts and sudden wind exposure as they emerge into the Columbia River Gorge corridor.

Logistics & Services

Fuel, food, and lodging are concentrated in key hubs along the path: * West Side: Full services are abundant in Troutdale, Gresham, and Sandy. Limited fuel and general stores exist through the mountain communities of Rhododendron, Zigzag, and Government Camp along US-26. * High Mountain: Basic services are available near Government Camp, but options are sparse on the OR-35 stretch across the east shoulder. * East Side / North: Fuel and services resume in Parkdale and are comprehensive at the destination in Hood River.

Cellular coverage is generally reliable near towns but can drop off in deep river canyons on US-26 and high mountain passes along OR-35.

Important Considerations

Traffic Volumes: US-26 is a major commercial and commuter artery, heavy with freight and recreational weekend traffic heading to and from Mount Hood. * Rapid Elevation Changes: Temperature drops rapidly as you climb toward Timberline; appropriate gear layers are necessary even on warm summer days in the lowlands. * Pavement Hazards: Subalpine stretches on OR-173 and OR-35 are subject to severe freeze-thaw cycles, leaving gravel accumulation, rutting, and frost heaves in late spring.