Frequently Asked Questions
What is the distance between Alpine, California, United States and Sydney, New South Wales, Australia?
The straight-line (great-circle) distance between Alpine, California, United States and Sydney, New South Wales, Australia is 12,129 kilometres (7,537 miles). This is the shortest possible distance between the two points on Earth's surface, calculated using the haversine formula based on precise latitude and longitude coordinates.
How long does it take to fly from Alpine, California, United States to Sydney, New South Wales, Australia?
At an average commercial jet speed of 900 km/h, the estimated flight time from Alpine to Sydney is approximately 13.5 hours. This excludes takeoff, landing, taxi time, and potential layovers. Actual flight duration may vary depending on aircraft type, routing, weather conditions, and air traffic.
What is the time difference between Alpine, California, United States and Sydney, New South Wales, Australia?
The time difference between Alpine, California, United States and Sydney, New South Wales, Australia is +17h. Sydney is +17h ahead of Alpine. This difference is important to consider when scheduling calls, meetings, or travel between the two cities.
Is the distance shown the same as driving distance?
No. The distance shown is the straight-line distance (also called "as the crow flies" or great-circle distance). Actual driving distance would be longer due to roads, terrain, and geographic obstacles. Flight routing may also differ from the straight-line path due to air traffic corridors, weather, and political airspace restrictions.
How accurate is this distance calculator?
Our calculator uses precise latitude and longitude coordinates from a database of over 150,000 cities worldwide and applies the haversine formula. This method is accurate to within a fraction of a percent for Earth-scale distances, making it suitable for travel planning, logistics, and general reference.
What are the coordinates of Alpine and Sydney?
Alpine is located at approximately 32.83505000°N, -116.76641000°E. Sydney is located at approximately -33.86785000°N, 151.20732000°E. These coordinates are used to calculate the precise great-circle distance between the two cities.