The planet that travels the greatest distance in its orbit is Neptune.

Here's why:

* Orbital Distance: Neptune has the largest average distance from the Sun (about 30 astronomical units).

* Orbital Path: The further a planet is from the Sun, the larger the circumference of its orbital path.

* Time: While Neptune's orbital period is very long (165 Earth years), the sheer distance it covers in its orbit makes it the champion.

Let me know if you'd like to know more about orbital distances or planetary orbits!