The distance between 1st base and 3rd base on a MLB field is 127'.
For Little League (7 - 12 year olds), the distance is 60 feet.
The baseball playing field (or diamond) is shaped like a diamond. There are three bases (first, second, and third) are on the corners away from home plate. The distance between these bases (on the basepath or distance straight from first base to second base, or second base to third base, etc.) is 90 feet in Major League baseball. In Little League, the distance in 60 feet.
The distance varies based on the league. Baseball (NCAA and MLB) is 90 feet. Softball is between 60 and 90 feet, depending on underhand or overhand, or mens and womens.
In Major League Baseball, the distance is 90 feet.
It can depend on the exact League but Official Little League Baseball base distance is 60 feet.
90 feet, the same between all bases in baseball. If you mean going around the bases, the shortest distance would be 270 feet, first to second, second to third and third to home.
According to MLB Rule 1.04: "The distance between first base and third base is 127 feet, 3.38 inches."