How many days for an Australia road trip?

The Europe-Australia flight is long, expensive and tiring: dedicating that return journey to fewer than ten days on the ground makes little sense, especially as the first two days are partly spent recovering from jet lag — 8 to 10 hours depending on the coast. Most travellers therefore build the Australian trip around three weeks of leave, of which 17 to 19 usable days on site. That's the reference format to think from, whether you shrink it to 12 days for a single objective or stretch it to a month for the big itineraries.

As in Argentina or Chile, the country is tackled by regions linked by domestic flights: East Coast (Sydney, Brisbane, the Great Barrier Reef), Red Centre (Alice Springs, Uluru), Victoria and the Great Ocean Road, Western Australia, Tasmania. Domestic air links are dense and affordable; one-way rentals between major cities on the same coast are common and reasonably priced — it's one of the few destinations where the road one-way is a genuine planning tool.

The most satisfying short format remains a one-way stretch of East Coast: Sydney-Byron Bay-Gold Coast-Brisbane (about 1,000 km) in ten days of beaches, national parks and coastal towns, or the tropical version around Cairns-Port Douglas and the Daintree rainforest, with dive trips to the Great Barrier Reef, which even fits into a single week on site. Second option: Melbourne, the Great Ocean Road and its Twelve Apostles (about 250 km of coastal road to stretch over two to three days), rounded out with the Mornington Peninsula or the Grampians.

The iconic alternative is the Red Centre: a three-hour flight from the coasts, then the Alice Springs-Uluru-Kata Tjuta-Kings Canyon-Alice Springs loop, about 1,100 to 1,200 km of asphalt through the desert, in five to six days. Uluru is 450 km from Alice Springs (4 h 30 to 5 h of driving), Kings Canyon 300 km from Uluru: the stages are long but simple, and the spectacle — sunrise over the monolith, the canyon rim walk — justifies every kilometre. Combined with two or three city days on arrival, this programme fills exactly 10 to 12 days.

Fifteen to eighteen days on the ground allow the duo most first trips are built on: the East Coast and the Red Centre. The classic assembly chains Sydney (three nights), a flight to Alice Springs or directly to Yulara for the desert loop (five to six days of driving), then a flight to Cairns to finish between the Reef and the rainforest (four to five days, car useful but not essential). Three radically different atmospheres, two separate car rentals, and a pace that stays human.

The southern variant swaps Cairns for Melbourne and the Great Ocean Road — cooler, more urban, ideal if you travel during the austral summer when the tropical north is in its wet season. In both cases the golden rule is the same: no more than two domestic flights on this format, or the trip becomes a string of airports.

Three full weeks open up the complete Sydney-Cairns run: about 2,400 km one way, paced by Byron Bay, Brisbane, Noosa, Fraser Island (K'gari), the Whitsundays and Mission Beach. It's the great campervan classic, at 150 to 250 km of actual driving per day — beyond that, all you see is the windscreen. The same duration also allows an East Coast + Red Centre + Great Ocean Road triptych, more flight-heavy but very complete.

Beyond three weeks begins connoisseurs' Australia: the West Coast from Perth to Broome (about 2,300 km via the Pinnacles, Kalbarri, Shark Bay, Ningaloo and Karijini), wilder and emptier than the East, or the great crossings — the Stuart Highway from Adelaide to Darwin, the Nullarbor between Adelaide and Perth. Those itineraries have to be earned: far-apart fuel stops, road trains, and 400-500 km days that need a month to remain a pleasure.

The real risk of an Australian road trip doesn't show on the map: it's the animal collision. A study by Peter Rowden, Dale Steinhardt and Mary Sheehan, published in 2008 in Accident Analysis & Prevention, analysed road crashes involving animals in Australia: kangaroos account for the vast majority of recorded collisions, with marked peaks at dawn and dusk (study available on Google Scholar: scholar.google.com/scholar?q=Rowden+Steinhardt+Sheehan+road+crashes+involving+animals+Australia). The countermeasure is one rule: outside built-up areas, set your stages so you never drive between sunset and sunrise — exactly as in Namibia or Botswana.

Add the adaptation to driving on the left, which plays out mostly in the first days: a study by Jeff Wilks, Barry Watson and Ian Faulks, published in 1999 in Tourism Management, showed that international tourists form a specific risk group on Australian roads, particularly just after arrival, when flight fatigue and reversed reflexes combine (study available on Google Scholar: scholar.google.com/scholar?q=Wilks+Watson+Faulks+international+tourists+road+safety+Australia). In practice: no big stage on arrival day, a “LEFT” post-it on the dashboard, and the passenger on lookout duty at roundabouts for the first few days.