I want to comapre 4 sets of different data for a single point in one grapg . Which is the best method to do that/ I know histogrm but not interested in that.

say for eaxmple I have 20 distance data in each catagory
distance from ohio
distance from chicago
dist from toledo
dist from pittsburg
I have these 4 data how do i plot all of them for a single point and show the variations for 20 points.

pls suggest the best staistical method or plotting