Forest Service Road 46 – Mount Hood to Timothy Lake Loop
Mount Hood's hidden alpine back door loop
Forest Service Road 46 wraps around Mount Hood’s southern slopes like a dirt collar, threading between Timothy Lake and the Salmon-Huckleberry Wilderness through some of Oregon’s most pristine high country. The route starts near Government Camp and winds east through stands of Douglas fir and mountain hemlock, crossing numerous creek drainages before reaching the Timothy Lake area where camping spots overlook the glacial waters with Mount Hood’s south face dominating the skyline. The road passes several technical spurs including the steep descent to Clackamas Lake and multiple creek crossings that can run deep during snowmelt.
This is a moderate route requiring high-clearance 4WD for the rougher sections, though most of the mainline is passable by stock vehicles in dry conditions. Best tackled July through September when snow clears from the 4,000-foot elevations, though early season can mean muddy conditions and washouts. No permits required, but dispersed camping is abundant with established fire rings near the lakes. Carry extra fuel as the nearest services are back in Government Camp, and water is available from multiple creek crossings. You’ll earn some of Oregon’s best alpine scenery without the crowds of the main Mount Hood recreation areas.
Trail Specs
| Difficulty | Moderate |
|---|---|
| Trail Type | Overland Route |
| Surface | Dirt |
| Features | Camping, High Altitude, Scenic, Water Crossings |
| Length (miles) | 34 mi / 54.7 km |
| Duration | 1-2 days |
| Max elevation (ft) | 4600 ft |
| Best season | July-September |
| Minimum vehicle | High-clearance 4WD |
| Nearest town | Government Camp, Oregon |
| Land manager | Mount Hood National Forest |
| Permit required | No |
| Cell service | None |
| Water crossings | Yes |
| Dispersed camping | Yes |
| Official sources | fs.usda.gov |
| Start coordinates | |
| End coordinates | |
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Location
Trail Conditions
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Frequently asked questions
Can a stock Tacoma or 4Runner handle FSR 46 without modifications?
Yes — a stock high-clearance 4WD like a Tacoma or 4Runner is the stated minimum and handles this route fine in normal summer conditions. Lifted rigs aren't required, but you'll want decent all-terrain tires since the dirt surface gets loose and rutted after heavy use.
When does FSR 46 actually open after winter, and is snow a real concern?
July through September is the reliable window — snow lingers at elevation into June most years and can return by October. Check current road conditions with Mount Hood National Forest before heading out; the 4,600 ft max elevation means surprise closures are real even in early summer.
Do you need a permit or pass to run this loop?
No permit is required to drive the route, but you'll need a Northwest Forest Pass ($5/day or $30 annual) if you park at any designated trailheads along the way. No reservation system, no quota — just the pass for parking stops.
What's the hardest section of the loop and what makes it technical?
The roughest segments are the unmaintained FSR spurs closer to the Timothy Lake side where the road narrows, off-cambers, and gets deeply rutted. Nothing extreme, but a loaded rig on a tippy side-slope section will get your attention — moderate means moderate, not a Sunday drive.
Is there any cell service on this loop, and how far is the nearest gas from the trailhead?
Cell service is effectively zero once you leave Government Camp — plan accordingly and download offline maps before you go. Government Camp has a gas station about 3 miles from the start of the loop, so fuel up there; the next reliable option is Hood River or Sandy depending on your exit direction.
Trail track
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