The following are equidistance maps, each for a particular origin. Click on each one to get the large size (you can save at that point if you want a copy). For example, the first shows distances from San Francisco; looking at the circles, you can see that Japan, England, and Peru are all at about the same distance. The furthest point from SF is off the coast of Madagascar.

San Francisco, US

Caen, FR

Melbourne, AU

North Pole

Moscow, ID

Wellington, NZ