The distance from the Sun to Mars varies because Mars's orbit is elliptical.

Here are some key distances:

* Average distance: 142 million miles (228 million kilometers)

* Closest approach (perihelion): 128 million miles (206 million kilometers)

* Furthest distance (aphelion): 155 million miles (249 million kilometers)

So, depending on where Mars is in its orbit, the distance to the Sun can fluctuate quite a bit!