It's the furthest point west.
The furthest point from the center is the circumference of the circle.
The furthest point I have traveled from home is approximately 5,000 miles away.
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Alaska is furthest north and the point is Point Barrow.
The furthest south point in Britain is Lizard Point in Cornwall, England. It is situated on the Lizard Peninsula and marks the southernmost tip of the UK mainland.
The point furthest north on the earth's surface is the point at 90 degrees north latitude, popularly referred to as the "north pole". The point furthest south on the earth's surface is the point at 90 degrees south latitude, popularly referred to as the "south pole".
The furthest point on Earth from an ocean is located in north central China, in the area of china between Mongolia and Kazakhstan. Furthest country in the world from any sea or ocean is Kyrgyzstan.
The extreme points of an orbit are generically called "apsis", and that's now the preferred term for all bodies. The furthest point in the orbit would be apoapsis, or for the Moon specifically, apolune, though as noted this term is now deprecated. Note that this applies only to orbits. There is no word for the furthest point of the entire journey.
The furthest distance on Earth from Miami, FL would be the point furthest away from it, which is likely in China or Southeast Asia. The specific location would depend on the point on the earth's surface that is considered farthest from Miami.
Perihelion = The point in a body's orbit closest to the sun Aphelion = The point in a body's orbit furthest from the sun
Antarctica is the furthest south continent in the world, with the South Pole located at its southernmost point.