Distance between cities › Australia › South Australia › Lock, SA › Distance from Lock to Williamstown Book Hotels

Distance from Lock, SA to Williamstown, SA

Distance

593 km

Time

7 hours 8 mins

Gas Cost

$44 - $116

There are 313.38 km (194.73 miles) from Lock to Williamstown in southeast direction and 592.24 km (368 miles) by car, following the A1 route.

Lock and Williamstown are 7 hours 8 mins far apart, if you drive non-stop .

This is the fastest route from Lock, SA to Williamstown, SA.

Lock, SA and Williamstown, SA are in the same time zone (ACST). Current time in both locations is 10:55 am.

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Lowest Price Rental Cars in Lock, SA

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

Small

From $14

Intermediate

From $18

Full-size

From $24

SUVs

From $28

Vans

From $40

Compare rental car prices in Lock »

Gas Consumption and Emissions

A car with a fuel efficiency of 10.8 l/100 km will need 64 liters of fuel to cover the route between Lock, SA and Williamstown, SA.

The estimated cost of fuel to go from Lock to Williamstown is $95.99.

During the route, an average car will release 1,530.79 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 5, 2026.
Read more about our CO₂ calculation.

Halfway Point Between Lock, SA and Williamstown, SA

If you want to meet halfway between Lock, SA 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 -33.863811 and 137.472076, or 33º 51' 49.7196" S, 137º 28' 19.4736" E. This location is 184.10 miles away from Lock, SA and Williamstown, SA and it would take approximately 3 hours 34 mins to reach the halfway point from both locations.

Distance conversions

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

Distance type	Miles	Kilometers	Nautical miles
Straight line distance	194.73 mi	313.38 km	169.21 nautical mi
Driving distance	368 mi	592.56 km	319.96 nautical mi

Road Trip Tips