Birches Inlet Road — Strathgordon to Birches Inlet via Southwest National Park Hydro Back Road
Southwest wilderness on a drowned lake's edge.
Built to service the Hydro Tasmania infrastructure that drowned the original Lake Pedder in the 1970s, the Birches Inlet road is one of the loneliest tracks in the Australian state park system. From Strathgordon the sealed road quickly deteriorates into a single-lane gravel and mud track pushing southwest through dense scrub and across dolerite rubble toward the inlet’s tidal reach. The track passes the old construction camp site — now just collapsed corrugated iron and broken concrete — before breaking into open buttongrass moorland with the Crossing River flats visible ahead. High winds are a constant companion here; the southwest is exposed to Southern Ocean weather systems that roll in fast and without much warning. The track ends at a rough turnaround above the inlet where quartzite ridges drop sharply into dark tannin-stained water.
This is proper southwest Tasmanian terrain — the kind that will find every weakness in your rig. High-clearance 4WD is a hard minimum; a lift and proper mud terrain tyres are strongly recommended. The track is impassable during and after extended rain. Strathgordon is the only fuel stop — a single bowser at the town, so verify it’s operating before you leave Hobart. No mobile coverage whatsoever. Summer (December–February) gives you the longest daylight and the driest window. A national park pass is required. What you earn is access to southwest Tasmania that most people only ever see from a plane.
Trail Specs
| Difficulty | Expert |
|---|---|
| Trail Type | Backcountry, Technical 4x4 |
| Surface | Dirt, Gravel, Mixed |
| Features | Historic, Remote, Scenic, Water Crossings |
| Length (miles) | 19 mi / 30 km |
| Duration | 1 day |
| Max elevation (ft) | 1640 ft |
| Best season | December-February |
| Minimum vehicle | High-clearance 4WD with mud terrain tyres |
| Nearest town | Strathgordon, Tasmania |
| Land manager | Tasmania Parks and Wildlife Service |
| Permit required | Yes |
| Cell service | None |
| Water crossings | Yes |
| Dispersed camping | No |
| Official sources | parks.tas.gov.au |
| Start coordinates | |
| End coordinates | |
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Location
Trail Conditions
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Frequently asked questions
Can a lifted Prado or 4Runner on all-terrains handle this, or do I actually need mud terrains?
Mud terrains are not optional here — the track cuts through buttongrass country where clay-based surfaces turn greasy and deep even in summer. An all-terrain on a well-set-up Prado might get you in, but recovery out is a different story. Don't chance it without proper mud terrain rubber and a full recovery kit.
When is Birches Inlet Road actually driveable, and what happens if it rains mid-trip?
December through February is the window when the track is most stable, but southwest Tasmania can dump serious rain any time of year. If it rains mid-trip, the clay sections deteriorate fast — what was marginal going in can become impassable on the way out. Check the Bureau of Meteorology southwest Tasmania forecasts obsessively before you commit.
Do I need a permit to drive into Southwest National Park on this road?
Yes — a Tasmania National Parks Pass is required to access Southwest National Park. Purchase it online through the Parks Tasmania website or at self-registration stations before you enter. Have it displayed in the vehicle.
What's the hardest section and what am I actually dealing with?
The worst sections are the low-lying clay bog crossings through the buttongrass plains, which can swallow a vehicle to the axles after any recent rain. There are also unimproved water crossings with no bridges — depth and entry/exit angles vary seasonally. This is not a trail where you can improvise your way through a mistake; recovery options are extremely limited and you are genuinely isolated.
How much fuel do I need and is there anywhere to refuel near the trailhead?
Strathgordon is the last fuel stop and it has limited trading hours — don't assume the bowser is open when you arrive. The trail itself is 30km return minimum, but factor in the 170km round trip from Hobart if that's your base. Carry a jerry can; running out of fuel in southwest Tasmania is not a recoverable situation on the day.
Trail track
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