Mars's distance from the Sun varies because its orbit is elliptical, not perfectly circular.

Here's a breakdown of the distances:

* Average distance: 227.9 million kilometers (141.6 million miles)

* Perihelion (closest point): 206.7 million kilometers (128.4 million miles)

* Aphelion (farthest point): 249.2 million kilometers (154.6 million miles)