Distance between cities › Australia › South Australia › Koolunga, SA › Distance from Koolunga to St Marys Book Hotels

Distance from Koolunga, SA to St Marys, TAS

Distance

1,544 km

Time

23 hours

Gas Cost

$116 - $301

There are 1,245.35 km (773.83 miles) from Koolunga to St Marys in southeast direction and 1,543.36 km (959 miles) by car and ferry, following the 1 route.

Koolunga and St Marys are 23 hours far apart, if you drive non-stop for 14 hours and take a ferry for 9 hours .

This is the fastest route from Koolunga, SA to St Marys, TAS.

Please note the time difference between Koolunga, SA and St Marys, TAS is 30 minutes. The current time in Koolunga is 12:41 pm and the current time in St Marys is 1:11 pm.

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Lowest Price Rental Cars in Koolunga, SA

Planning on renting a car to go from Koolunga, SA to St Marys, TAS? Here there are some offers to rent a car in Koolunga, SA

Small

From $14

Intermediate

From $18

Full-size

From $24

SUVs

From $28

Vans

From $40

Compare rental car prices in Koolunga »

Gas Consumption and Emissions

A car with a fuel efficiency of 10.8 l/100 km will need 166.71 liters of fuel to cover the route between Koolunga, SA and St Marys, TAS.

The estimated cost of fuel to go from Koolunga to St Marys is $250.07.

During the route, an average car will release 3,987.80 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 Koolunga, SA and St Marys, TAS

If you want to meet halfway between Koolunga, SA and St Marys, TAS or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are -37.492561 and 143.679459, or 37º 29' 33.2196" S, 143º 40' 46.0524" E. This location is 479.59 miles away from Koolunga, SA and St Marys, TAS and it would take approximately 11 hours 30 mins to reach the halfway point from both locations.

Distance conversions

Checkout the distance in miles, kilometers and nautical miles between Koolunga, SA and St Marys, TAS in this table:

Distance type	Miles	Kilometers	Nautical miles
Straight line distance	773.83 mi	1,245.35 km	672.44 nautical mi
Driving distance	959 mi	1,543.65 km	833.51 nautical mi

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