IIRC, the dist. between home to first is 90' from the apex (the pointy part of the plate that points directly to the back stop) of home to the back of first base. The dist. between first and second is 90' from the edge of first base that is on the foul line to the centre of base second base. So the true distance is less than 90'.
ononmatopaeia: need your expertise here!
Looking to build your own baseball field? In today’s baseball field dimensions guide, I’m going to help you get started!
thechamplair.com
The starting point for your measurements would be the
home plate. You should measure the distance between the home plate and the following points:
- The backstop. Depending on the league, the backstop should be 20 to 60 feet away from the home plate’s back tip. To measure the home to backstop distance, you need to locate the center of the backstop with measuring tape and measure the distance from it.
- The pitching mound. The pitching mound is located 38 feet to 60 feet 6 inches (again, depending on the league) away from the home base՛s back tip.
- The second base. The second base should be located in front of the home-plate past the pitching mound. The distance between the second base and home plate should be from 70 feet 8-1/2 inches to 127 feet 3-3/8 inches.
Once you’ve got these marked, you can locate the position of the
first base. To do this, run a string from the second base toward the location where the first base should be. Measure 60 to 90 feet from the center of the second base and draw a line with chalk.
Do the same from the home plate to the location of the first base. The
back right corner of the first base will be where the chalk lines intersect.
Repeat these steps to find the
third base, but note that it’s the
back left corner that should be placed at the chalk lines’ intersection.
So it's 90 feet between bases, measured from the centers of the bases, and less from edge to edge.