Gibb River Road — Derby to Kununurra via the Kimberley Gorge Country (Wet Season Closed)
1,100 dunes. No shade. No mercy.
Nobody built the French Line for comfort. French Petroleum Company survey crews punched it due east across the Simpson Desert in the 1960s, crossing more than 1,100 sand dunes — all running north-to-south, all demanding a perpendicular assault. The main route runs roughly from Birdsville in Queensland’s Channel Country west to Purni Bore near the South Australian border, with the iconic Big Red dune (38 metres high) serving as the ceremonial gate for eastbound travellers. Each crest is a gear-selection decision. Hit it wrong — speed, angle, tyre pressure — and you’re digging out in 45-degree heat with no shade and nobody coming.
This is Expert to Extreme territory. You need a well-prepared high-clearance 4WD with dual spare tyres, a full-size recovery kit, and enough fuel to cover 600 km with zero resupply. Tyre pressures drop to 18–22 psi on the crests. Water carries are non-negotiable — Purni Bore is artesian and unpotable without treatment. The window is April to September; summer temperatures regularly hit 50°C and flash flooding closes the track without warning. A QLD Desert Parks Pass is required. Satellite comms are essential. You’ll earn a silence out here that city people have forgotten exists.
Trail Specs
| Difficulty | Extreme |
|---|---|
| Trail Type | Overland Route, Remote, Technical 4x4 |
| Surface | Sand |
| Features | Camping, Historic, Remote, Scenic |
| Length (miles) | 370 mi / 595 km |
| Duration | 5-8 days |
| Max elevation (ft) | 492 ft |
| Best season | April-September |
| Minimum vehicle | Fully built high-clearance 4WD with dual spares |
| Nearest town | Birdsville, QLD |
| Land manager | Queensland Parks and Wildlife Service / South Australian Department for Environment and Water |
| Permit required | Yes |
| Cell service | None |
| Water crossings | No |
| Dispersed camping | Yes |
| Official sources | QLD Parks Simpson Desert page SA Parks Simpson Desert Regional Reserve |
| Start coordinates | |
| End coordinates | |
| Copy both for Google Maps directionsClick to copy the directions URL · or open it directly in a new tab | |
| Find on Google | Search on Google → |
Location
Trail Conditions
No recent condition reports. Be the first to post one.
Log in to post a condition report.
Frequently asked questions
Can a lightly modified 4WD handle the French Line, or do I need a fully built rig?
You need a fully built high-clearance 4WD — minimum dual spare tyres, a reliable recovery kit, and ideally a second vehicle. A stock or lightly modded rig crossing 1,100 sand dunes in extreme heat with zero backup is a rescue operation waiting to happen.
When is the French Line actually passable, and what closes it?
April through September is the window — the desert cools enough to be survivable and the sand firms up slightly. Summer heat regularly tops 50°C, which kills vehicles, people, and any margin for error. The trail isn't formally 'closed' in summer, but the conditions will close it for you.
Do I need a permit to drive the French Line through the Simpson Desert?
Yes — you need permits from both Queensland Parks and Wildlife and the South Australian Department for Environment and Water, as the route crosses both state jurisdictions. Get them before you leave; there's no ranger station out there to sort it on the fly.
What's the hardest section and what actually makes it technical?
The dune crossings are relentless and cumulative — Big Red near Birdsville is the famous one, but the real difficulty is 1,100 consecutive crests demanding constant tyre pressure management, momentum reads, and recovery work. Compressor failures, bogged vehicles, and overheating are the most common trip-enders.
How much fuel do I need to carry, and is there any resupply on route?
Plan for the full 595km with zero resupply — Birdsville is your last fuel stop heading west, and Dalhousie or Purnie Bore are not fuel sources. Carry enough for at minimum 700km when accounting for the extra consumption from soft sand running at reduced tyre pressures.
Trail track
No GPX track for this trail yet. If you've driven it and have a track, contribute below.
Log in to contribute a GPX track.