The farthest planet from Earth in our solar system is Neptune, though the exact distance is always changing because both Earth and Neptune are constantly moving in their orbits.

Quick Scoop: Why Neptune Wins

  • Neptune is the eighth and outermost major planet in our solar system.
  • On average, it orbits about 30 times farther from the Sun than Earth does.
  • The distance between Earth and Neptune ranges roughly from about 2.7 to 2.9 billion miles (4.3 to 4.7 billion km), depending on where each planet is in its orbit.

When Earth and Neptune line up on the same side of the Sun (closest approach), Neptune is still more than 4 billion kilometers away, which is why it took the Voyager 2 spacecraft about 12 years to reach it.

A small twist: “farthest” can be tricky

If you broaden the idea beyond the eight major planets, some dwarf planets and distant icy objects (like those in the Kuiper Belt and beyond) can be much farther away than Neptune, and there are even candidate objects like “Planet Nine” that, if confirmed, would orbit far beyond Neptune.

But under the usual definition of “planet” in our solar system, Neptune holds the title of farthest planet from Earth.

TL;DR: Neptune is the farthest planet from Earth, sitting billions of miles away, and its exact distance changes as both planets travel around the Sun.

Information gathered from public forums or data available on the internet and portrayed here.