from my experience where a ex partner has relocated the orders have been that the relocating parent is to be more lienant as they have made the decision to move. IYKWIM

The judge will def take into account the childs routine, school/ care arrangements and do what is best for that.. often a relocation for a child is not in the best interest and he might find it may blow up in his face.
if he is so far away the school/care they are attending is not possible i can not personally (this is My opinion only) the judge removing the children to his full time care unless he can prove you are a unfit mother.

the only example i really now though is moving interstate, and the mother moved, she has to proved access for her son to visit his dad and pay for it on a regular basis. ie. flights all at her owns cost.