Distance between cities › Australia › New South Wales › One Tree, NSW › Distance from One Tree to Williamstown Book Hotels

Distance from One Tree, NSW to Williamstown, SA

Distance

690 km

Time

8 hours 28 mins

Gas Cost

$52 - $135

Helpful Inaccurate

There are 578.50 km (359.47 miles) from One Tree to Williamstown in west direction and 690.41 km (429 miles) by car, following the A20 route.

One Tree and Williamstown are 8 hours 28 mins far apart, if you drive non-stop .

This is the fastest route from One Tree, NSW to Williamstown, SA.

Please note the time difference between One Tree, NSW and Williamstown, SA is 30 minutes. The current time in One Tree is 4:39 am and the current time in Williamstown is 4:09 am.

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Lowest Price Rental Cars in One Tree, NSW

Planning on renting a car to go from One Tree, NSW to Williamstown, SA? Here there are some offers to rent a car in One Tree, NSW

Small

From $14

Intermediate

From $18

Full-size

From $24

SUVs

From $28

Vans

From $40

Compare rental car prices in One Tree »

Gas Consumption and Emissions

A car with a fuel efficiency of 10.8 l/100 km will need 74.56 liters of fuel to cover the route between One Tree, NSW and Williamstown, SA.

The estimated cost of fuel to go from One Tree to Williamstown is $111.84.

During the route, an average car will release 1,783.52 kilograms of CO₂ to the atmosphere. The carbon footprint would be 2.58 kilograms of CO₂ per kilometer.

Average Australia gas price used for calculation is $1.50 per liter of regular gas. Price last updated on March 10, 2026.
Read more about our CO₂ calculation.

Halfway Point Between One Tree, NSW and Williamstown, SA

If you want to meet halfway between One Tree, NSW and Williamstown, SA or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are -34.220169 and 142.120453, or 34º 13' 12.6084" S, 142º 7' 13.6308" E. This location is 214.49 miles away from One Tree, NSW and Williamstown, SA and it would take approximately 4 hours 14 mins to reach the halfway point from both locations.

Distance conversions

Checkout the distance in miles, kilometers and nautical miles between One Tree, NSW and Williamstown, SA in this table:

Distance type	Miles	Kilometers	Nautical miles
Straight line distance	359.47 mi	578.50 km	312.37 nautical mi
Driving distance	429 mi	690.39 km	372.78 nautical mi

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