Pathway to Parenting Act of 2018 This bill amends the federal criminal code to establish requirements for the treatment of prisoners. It directs the Bureau of Prisons (BOP) to place prisoners as close to their children as possible, provide videoconferencing free of charge, and provide trauma-informed care to prisoners diagnosed with trauma. Additionally, with respect to prisoners who are primary caretaker parents, the BOP must provide parenting classes, allow visitation from family members, and establish a pilot program to allow overnight visits from family members. The bill allows a prisoner who is pregnant or a primary caretaker parent to participate in a residential substance abuse treatment program, even if the individual failed to disclose a substance abuse problem. Finally, it establishes a pilot program to provide prenatal care to female prisoners.