Mars is approximately 141.6 million miles from the Sun. In comparison, the Earth is approximately 92.9 million miles from the Sun. These measurements are averages, because the distances vary due to the elliptical shapes of the planets' orbits.
Mars is the fourth planet from the Sun in the solar system. Mercury, Venus and Earth are all closer to the Sun than Mars. Jupiter, Saturn, Uranus and Neptune are all farther from the Sun than Mars. It takes Mars 687 days to orbit the sun, nearly twice as long as the Earth. Although the surface of Mars has been extensively mapped and studied through robotic missions, no human has ever visited Mars.