distance between the pitching mound and home plate

Question
I am building my 13 year old son a pitching mound.  My son plays modified baseball on the 8th grade team.  His team has played on the varsity field, so I'm pretty sure the dimensions for varsity and modified are the same.  What is the distance between the mound and home plate?  

Answer
BJ,

The distance from the pitching rubber to the back tip of home plate in professional, college and high school baseball is 60 ft. 6 in.

In some leagues 13-14 will pitch from that same distance, but in some they will throw from 54 ft. as a transition from little league to high school.

I would check with your rules for your league and work from there.

Have fun!

Coach Boss