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

Distance from Coolamon, NSW to Williamstown, SA

Distance

875 km

Time

10 hours 45 mins

Gas Cost

$66 - $171

Helpful Inaccurate

There are 759.51 km (471.94 miles) from Coolamon to Williamstown in west direction and 875.48 km (544 miles) by car, following the A20 route.

Coolamon and Williamstown are 10 hours 45 mins far apart, if you drive non-stop .

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

Please note the time difference between Coolamon, NSW and Williamstown, SA is 30 minutes. The current time in Coolamon is 12:51 am and the current time in Williamstown is 12:21 am.

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Lowest Price Rental Cars in Coolamon, NSW

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

Small

From $14

Intermediate

From $18

Full-size

From $24

SUVs

From $28

Vans

From $40

Compare rental car prices in Coolamon »

Gas Consumption and Emissions

A car with a fuel efficiency of 10.8 l/100 km will need 94.49 liters of fuel to cover the route between Coolamon, NSW and Williamstown, SA.

The estimated cost of fuel to go from Coolamon to Williamstown is $141.74.

During the route, an average car will release 2,260.23 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 Coolamon, NSW and Williamstown, SA

If you want to meet halfway between Coolamon, 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 -34.525169 and 142.913742, or 34º 31' 30.6084" S, 142º 54' 49.4712" E. This location is 271.82 miles away from Coolamon, NSW and Williamstown, SA and it would take approximately 5 hours 22 mins to reach the halfway point from both locations.

Distance conversions

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

Distance type	Miles	Kilometers	Nautical miles
Straight line distance	471.94 mi	759.51 km	410.10 nautical mi
Driving distance	544 mi	874.92 km	472.42 nautical mi

Road Trip Tips