90 feet
I'm assuming you mean USA baseball. The distance between home plate and the pitcher's rubber (the center of the mound) is 60 feet 6 inches. The distance between each base around the diamond is 90 feet.
A 6400 square foot baseball diamond is just a little smaller than a regular diamond. That's 80 feet between each base.
The distance between the front and rear axles is known as the "wheel base". It is measured from the center of each axle.
In Baseball the distance in feet between the bases and home plate are 90 feet.
10 yards
There are 90 feet between each base in Major League baseball.
This is because the rules of baseball say the mound is a distance from homeplate that is less than halfway the distance between homeplate and 2nd base. The distance is the same between each base in order (the same from home to 1st, 1st to 2nd, 2nd to 3rd, 3rd to home.) This results in the distance between homeplate and 2nd equal to the distance between 1st and 3rd. If you draw a line between homeplate and 2nd, and a line between 1st and 3rd, the lines will intersect in the center of the baseball diamond. However, the center point will be behind the pitcher's mound. You can use the Pythagorean Theorem to prove the distance from the mound to home is less than the center point, but that is another question. (Hint: The distance squared from home to first plus the distance squared from first to second divided by 2).
The distance between third and home is 90 feet. First to second, and second to third are also 90 feet each.
This involves a bit of geometry. First of all, a baseball diamond including the four bases, first base, second base, third base and home plate is a square. To find the exact distance in a straight line between first base and third base (or home plate to second base, for that matter), simply use half the diamond by using the right triangle formed by two of the base lines (each of which is 90 feet in a straight line between the bases. That leaves the hypotenuse of your right triangle (a straight line between first base and third base) to be determined. Geometry will give you your answer. Square each of the base lines (multiply each by itself), add them together, and then determine the square root of your total. That amount will be your hypotenuse, or the straight line distance between first base over to third base (the answer is the same from home plate to second base). I'm not going to tell you what the exact answer is, but you will find that it's slightly more than 127 feet.
The distance between every single base in softball is 60 feet. The distance to the pitcher's mound from home is either 40 or 43 feet depending on what level you are playing at. The outfield depth varies from field to field.
The distance between bases in baseball is 90 feet.