As both Mars and Earth orbit the Sun (at different speeds) and both have slightly elliptical orbits this is not an easy question to answer because at some point Earth and Mars will be on opposite sides of the Sun and therefore very far apart while at other points they will both be on the same side of the Sun and therefore much closer together.
On average Mars orbits the Sun at a distance of 227,939,100 km
On average the Earth orbits the Sun at a distance of 149,597,888 km
Thus the distance between their "average" orbital paths is 78,341,212 Km. However, they would actually only be this distance from one another on rare occasions. Depending on where they are in their respective orbits, they can be anywhere from 36 million miles to over 250 million miles apart.
Basically, it is further from the sun, it is smaller and its atmosphere is far less dense.
around 150 miles
Earth.
Mar
"forgot" if your pronounce it far-got(:
It's 257 miles or 414 km from Buenos Aires to Mar Del Plata
20 miles
Mercury, Venus, Earth, mars, Earth's moon, Mar's moons, Ceres
About 18 miles and 29 kilometers.
Arr bar car far har jar mar par tar
It would be TO HOT and we may die
61 pounds :)