How far away from earth is Mars?

The distance from Mars to Earth ranges from approximately 54.6 million to 401 million km from Earth, (34 million to 250 million miles).

As both planets orbit the sun in an elliptical orbit, they can be sort of "close" and then, at a later time, they can be "distant" from one another. They are closest when they are on the same side of the orbit on the near side of Mars orbit, when Mars is closest to the Sun. They are farthest away when on opposite sides of the sun.

In one point in 2003, Earth and Mars were separated by only 55 million km.