Here's how to figure out the difference in distance between Earth and Mars from the sun:

* Earth's average distance from the sun: 93 million miles (149.6 million kilometers)

* Mars' average distance from the sun: 142 million miles (228 million kilometers)

To find the difference:

* 142 million miles (Mars) - 93 million miles (Earth) = 49 million miles

Therefore, Mars is about 49 million miles farther from the sun than Earth.

Important Note: These are average distances. Both planets have elliptical orbits, so their distances from the sun vary throughout the year.