The 90 Mile Straight

Between Balladonia and Caiguna the Eyre Highway runs dead straight for 146.6 kilometres — 91 miles — without a single turn. The “90 Mile Straight” is regarded as the longest straight stretch of road in Australia, and one of the longest in the world.

Where it is

The straight is part of the 182-kilometre leg between Balladonia and Caiguna, in Western Australia. Balladonia is 191 kilometres east of Norseman. There is no fuel between Balladonia and Caiguna, so fill up at one end before you start — see the fuel stops and distances table.

Driving it safely

• Fatigue is the real danger. Hour after hour of straight, flat road is hard on concentration. Stop and rest before you feel tired, and share the driving if you can.
• Watch for wildlife. Kangaroos, emus, camels and stock cross the road, especially around dawn and dusk. Avoid driving at night.
• Give road trains room. Long, heavy vehicles use the Eyre Highway all the time. Only overtake where you can see well ahead — which, here, is a long way.
• Look out for the airstrips. Some widened sections of the Eyre Highway are Royal Flying Doctor Service emergency airstrips, with runway markings painted on the road.

Nearby

In July 1979 debris from the Skylab space station came down in this part of Western Australia — the Balladonia page has the story. At the eastern end, Caiguna is the last stop on Western time before the Nullarbor's own Central Western time zone begins.

90 Mile Straight: common questions

Where is the 90 Mile Straight?

On the Eyre Highway in Western Australia, between Balladonia and Caiguna - part of the 182 km leg between the two. Balladonia is 191 km east of Norseman.

How long is the 90 Mile Straight?

146.6 km - 91 miles - without a single turn. It is regarded as the longest straight stretch of road in Australia, and one of the longest in the world.

Is there fuel on the 90 Mile Straight?

No. There is no fuel between Balladonia and Caiguna, so fill up at one end before you start.

More Nullarbor planning

• Crossing the Nullarbor: the complete guide
• Nullarbor Links golf course
• EV charging on the Nullarbor
• Nullarbor fuel stops and distances
• Nullarbor quarantine rules
• How many days to cross the Nullarbor
• Nullarbor time zones
• The Bunda Cliffs
• Free camps and rest areas
• Perth to Adelaide drive
• Melbourne to Perth drive
• Sydney to Perth drive
• Best time to cross and weather
• Towing a caravan across the Nullarbor
• Phone coverage and emergencies
• Help and support: Centrelink, health and crisis lines
• The Nullarbor: anything but plain

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