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

Distance from Smithtown, NSW to Williamstown, SA

Distance

1,773 km

Time

21 hours 32 mins

Gas Cost

$133 - $346

Helpful Inaccurate

There are 1,373.45 km (853.43 miles) from Smithtown to Williamstown in southwest direction and 1,771.89 km (1,101 miles) by car, following the M31 route.

Smithtown and Williamstown are 21 hours 32 mins far apart, if you drive non-stop .

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

Please note the time difference between Smithtown, NSW and Williamstown, SA is 30 minutes. The current time in Smithtown is 6:47 am and the current time in Williamstown is 6:17 am.

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Lowest Price Rental Cars in Smithtown, NSW

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

Small

From $14

Intermediate

From $18

Full-size

From $24

SUVs

From $28

Vans

From $40

Compare rental car prices in Smithtown »

Gas Consumption and Emissions

A car with a fuel efficiency of 10.8 l/100 km will need 191.44 liters of fuel to cover the route between Smithtown, NSW and Williamstown, SA.

The estimated cost of fuel to go from Smithtown to Williamstown is $287.16.

During the route, an average car will release 4,579.20 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 12, 2026.
Read more about our CO₂ calculation.

Halfway Point Between Smithtown, NSW and Williamstown, SA

If you want to meet halfway between Smithtown, 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 -35.021325 and 146.938051, or 35º 1' 16.77" S, 146º 56' 16.9836" E. This location is 550.72 miles away from Smithtown, NSW and Williamstown, SA and it would take approximately 10 hours 46 mins to reach the halfway point from both locations.

Distance conversions

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

Distance type	Miles	Kilometers	Nautical miles
Straight line distance	853.43 mi	1,373.45 km	741.61 nautical mi
Driving distance	1,101 mi	1,772.58 km	957.12 nautical mi

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