About 127 Ft.
The basepaths are 90 feet in high school baseball.
In Major League Baseball, College baseball and High School baseball, the distance between the bases is 90 feet.
from first base straight across the infield to third base is 127 ft 4. Since one base is the same 90 ft from the next one, the distance from home plate to second base is also 127 ft 4 in.
3rd base is 89 feet 10 inches from 1st base
Bases are different distances apart at different levels of play in baseball. Here is how you can find the distance across the diamond (home to second, or first to third) on any field: What is the distance between bases? Square that answer (multiply it by itself). Double that answer. Find the square root of that answer. The answer you get will be the distance from home to second or from first to third.
It is 90 feet from each base from high school on up through college and pro baseball.