Which of these cities is furthest from London sydney Madrid Cairo?

To find the city that is furthest from London, we can calculate the distance between London and each city and compare the results.

The distance from London to Sydney is approximately 17,000 km.

The distance from London to Madrid is approximately 1,500 km.

The distance from London to Cairo is approximately 3,500 km.

Therefore, Sydney is the city that is furthest from London.