The distance between third and home is 90 feet. First to second, and second to third are also 90 feet each.
46 feet
The distances between the plates are 90 feet. The distance between home plate and first base is 90 feet. First base to second base is 90 feet. Second base to third base is 90 feet. Third base to home plate is also 90 feet. Additionally, the distance between first and third base straight across is 127 feet.
If you drew a line from home plate to first base, first base to second base, second base to third base, and third base to home plate, you would have a square. This is because the distance between those bases is the same (90 feet). A square turned on its side is a diamond.
The distance of 90 feet (between home and first) is the distance of the middle of the plate and the middle of first base.
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.
In little league, where the bases are 60 feet apart, the distance between first base and third base is 84.85 feet. In MLB and leagues where the bases are 90 feet apart, the distance between first base and third base is 127.29 feet.
You can find the distance between first and third on any baseball or softball field by using the following formula: A squared plus B squared equals C squared. A is the distance between home and first base B is the distance between home and third base C is the distance between first base and third base. So with 70 ft. bases, it would be 99 feet.
The distance between first base and second base is 90 feet.
The distance is 60 ft
It's 127 feet, 3 3/8 inches from home plate to second base (the same distance from first base to third base).
84.9 FT