The Broome to Mackay campervan crossing, done properly

You can point the bonnet east and make Mackay in about 9 or 10 hard-driving days, but you will remember very little except servo pies, flies and the sound of your fridge door rattling. A better Broome to Mackay motorhome road trip is 12 to 16 days, with rest days at Kununurra, Katherine, Mount Isa or Longreach.

The route is mostly sealed highway: Great Northern Highway, Victoria Highway, Stuart Highway, Barkly Highway, Landsborough Highway and Peak Downs Highway. That does not make it suburban. Distances are big, phone reception comes and goes, and a 53.5 metre road train does not care that you are still learning where the cruise-control button lives.

• Fast but tiring: 10 days, mainly one-night stops and 500 km plus days.
• Sensible: 14 days, with shorter fuel-and-laundry days built in.
• Comfortable: 18 to 21 days, adding Lake Argyle, Mataranka, Longreach and Eungella.
• Do not: plan big twilight runs. Cattle, roos and wallabies treat dusk like peak hour.

The practical sealed line is Broome to Fitzroy Crossing, Halls Creek, Kununurra, Katherine, Tennant Creek, Mount Isa, Longreach, Emerald and Mackay. It is not the shortest-looking line on every map app, but it is the one most 2WD hire campervans and motorhomes can use without upsetting the rental agreement.

Expect the country to change in long, slow chapters: pindan and boabs out of Broome, the stone country near Halls Creek, the Victoria River escarpments, Barkly tableland emptiness, then Mitchell grass and coal-country hills before the drop into Mackay. It is a proper cross-continent drive, not a Sunday bakery run.

• Broome to Fitzroy Crossing: 396 km with limited shade and plenty of open road.
• Fitzroy Crossing to Kununurra: 649 km, but break it at Halls Creek and Warmun for fuel.
• Kununurra to Katherine: 514 km via Timber Creek and Victoria River country.
• Tennant Creek to Mount Isa: 661 km across the Barkly, with Barkly Homestead the key servo in the middle.
• Do: use town dump points when you see them, even if the cassette is only half full. Outback optimism has a smell.

The longest normal fuel gaps on this route are not outrageous by outback standards, but they are long enough to punish lazy planning. Fitzroy Crossing to Halls Creek is about 290 km. Timber Creek to Katherine is about 286 km. Barkly Homestead to Camooweal is about 260 km. Add headwinds, air-con, a loaded van and a heavy right foot, and your fuel range can shrink fast.

Most hired motorhomes will carry around 80 to 120 litres of fresh water, but that is not an invitation to take 20-minute showers. Carry extra drinking water in separate containers, especially from May to September when daytime highs commonly sit around 28 to 34°C across the north. In the build-up and wet season, 35°C plus with humidity is not heroic; it is just sweaty and expensive in fridge power.

• Fuel habit: fill when you can once the tank drops below half, especially before leaving Kununurra, Katherine, Tennant Creek and Mount Isa.
• Dump points: plan around Broome, Kununurra, Katherine, Tennant Creek, Mount Isa, Longreach, Emerald and Mackay.
• LPG: swaps and refills are easiest in larger towns; do not assume every roadhouse can help.
• Water: use signed potable taps only. A random hose beside a toilet block is not bushcraft.
• Budget note: powered sites in busy northern towns often sit around $45 to $80 a night, while basic showgrounds and free camps can be $0 to $30 where allowed.

Road trains are part of the scenery out here. They can be over 50 metres long, throw stones, and create a gust as they pass. Hold your line, ease off slightly if needed, and do not drift onto the shoulder unless it is safe and firm. If you overtake, you need a very long, very clear view. A campervan is not a sports car wearing curtains.

The sealed Broome to Mackay drive is generally suitable for 2WD campervans, but the side trips are where people get into trouble. The Gibb River Road, the Bungle Bungles access track, parts of Gregory National Park, and many station tracks are dirt or 4WD-only and may be excluded by hire agreements. After rain, even a short dirt road can become a clay skating rink.

• Dry season: May to September is the practical window, with cooler nights and fewer flood closures.
• Wet season: November to April can bring road closures, swollen creeks and humidity that makes bedding feel pre-steamed.
• Tyres: check pressures cold and inspect for sidewall cuts after rough roadhouse entries or gravel shoulders.
• Do: check Main Roads WA, NT Road Report and QLD Traffic before each big leg.
• Do not: take a standard 2WD hire van onto unsigned dirt just because a map app says it saves 22 minutes.

Free camping is possible on parts of this route, but it is not a national right bestowed at the bottle-o. Towns such as Broome and Mackay are strict about sleeping in vehicles outside approved areas, and fines can land in the $100 to $300 range depending on local rules. Use signed rest areas, paid parks, showgrounds, national park campgrounds and roadhouse camps where permitted.

A good rhythm is to mix free or low-cost overnight stops with powered sites every few nights for laundry, proper showers, battery top-ups and a cassette dump. National parks usually require online booking before arrival, and generators are often restricted or banned. If you are in a self-contained motorhome, you still need to use legal dump points; grey water on the ground is not a personality trait.

• First night out of Broome: stay close if you are new to the van, then push to Fitzroy Crossing the next morning.
• Good reset towns: Kununurra, Katherine, Mount Isa and Longreach all make sense for powered sites and supplies.
• Free-camp manners: arrive in daylight, park neatly, keep noise down and leave before overstaying posted limits.
• National parks: book ahead, follow generator rules and do not assume dump points or potable water are available.
• Booking tip: dry-season one-way hires can disappear early, so check campervan availability online before locking flights.