Can i move more than 50 miles away if we share joint custody? I an the custodial parent.

The first place you should look is the order that granted shared joint custody.  Most orders require either parent to notify the other if he or she plans to move more than 25 miles.  If that is the case, and there isn't any other prohibitation, you can notify the noncustodian parent of the move in writing.  If there isn't an objection, you can move. Even if there isn't a prior notification requirement in the order and depending on the relationship you have with the noncustodial parent, you may want to disclose the pending move to avoid a nasty court proceeding that will cost both sides extensive attorney's fees.   If both of you agree to a revised visitation plan before the move, you can file a consent modification to the current order.