When parents share joint custody of a child, there are no rules that dictate how far one parent may move away from the other. The situations in each joint custody case are unique. However, initial parenting plans will establish a limited geographical area that fits with the decisions of the custody order. If a parent wishes to extend beyond that area, they may do so. However, they must go through a court process. This will review the reasons for the move and how it may impact the child.