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

Distance from Lock, SA to Napier, NSW

Distance

1,361 km

Time

16 hours 20 mins

Gas Cost

$102 - $265

There are 1,027.99 km (638.77 miles) from Lock to Napier in east direction and 1,361.51 km (846 miles) by car, following the A20 route.

Lock and Napier are 16 hours 20 mins far apart, if you drive non-stop .

This is the fastest route from Lock, SA to Napier, NSW.

Please note the time difference between Lock, SA and Napier, NSW is 30 minutes. The current time in Lock is 4:25 am and the current time in Napier is 4:55 am.

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Lowest Price Rental Cars in Lock, SA

Planning on renting a car to go from Lock, SA to Napier, NSW? 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 147.01 liters of fuel to cover the route between Lock, SA and Napier, NSW.

The estimated cost of fuel to go from Lock to Napier is $220.51.

During the route, an average car will release 3,516.42 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 6, 2026.
Read more about our CO₂ calculation.

Halfway Point Between Lock, SA and Napier, NSW

If you want to meet halfway between Lock, SA and Napier, NSW or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are -34.215575 and 140.811071, or 34º 12' 56.07" S, 140º 48' 39.8556" E. This location is 422.90 miles away from Lock, SA and Napier, NSW and it would take approximately 8 hours 10 mins to reach the halfway point from both locations.

Distance conversions

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

Distance type	Miles	Kilometers	Nautical miles
Straight line distance	638.77 mi	1,027.99 km	555.07 nautical mi
Driving distance	846 mi	1,361.18 km	734.98 nautical mi

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