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Great Circle Distances
for Selected International Cities and Locales.

The table below is a summary of great circle mileages I have calculated using Andrew Gray's Java-based calculator . The main assumption made is that the earth is spherical with an average radius of 6,371 km (or 3,959 statute miles). Latitudes and longitudes are taken from Google Earth.

From To Statute Miles (Km)
Chicago Water Tower Bangkok Grand Palace

Hanoi Opera House

Hong Kong Cultural Center

KL Petronas Towers

Luang Prabang

Manila Rizal Park

Singapore City Hall

Sydney Opera House

Tokyo Imperial Palace

Yangon Shwedagon Pagoda

8,588 (5,318)

8,005 (4,974)

7,788 (4,839)

9,270 (5,760)

-----

8,130 (5,052)

9,362 (5,817)

9,244 (5,744)

6,297 (3,913)

8,374 (5,204)

Los Angeles Hong Kong

Singapore - Changi Airport

Kuala Lumpur

Bangkok

7,243

8,776

8,785

8,270

Bangkok Hong Kong

Singapore

Kuala Lumpur

Tokyo

1,073

889

737

2,865

London Bangkok

Hong Kong

Singapore

Kuala Lumpur

Tokyo

5,928

5,987

6,748

6,558

5,945

Kuala Lumpur Hong Kong

Singapore

Penang

1,564

194

184

Sydney Hong Kong

Singapore

Kuala Lumpur

Bangkok

Penang

Tokyo

Mars

4,580

3,916

4,110

4,683

4,284

4,863

50,000,000