46 feet. http://www.sportsknowhow.com/baseball/field-dimensions/little-league-baseball-field-dimensions.html
yes, there are no rules/regulations for pitching in softball. that's just baseball.
A 10 inch softball is used for little league but in 12u you change to a 12 inch softball.
there is softball in a lot of countries--- watch the little league softball world series in the summer
For little league they are usually 46-60 meaning 46 ft from pitcher to catcher and 60 ft from the bases
On a 40 foot Little League softball diamond, the distance from home plate to second base is 56 feet 7 inches.