We took a bus from Ixtapa to Acapulco. Originally, we wanted to travel from Acapulco to Manzanillo, which is south of Puerto Vallarta. After checking into Acapulco-Manzanillo, we decided it wouldn't work well. The bus ride was extremely long; I believe we had to pass over a mountain range. It was a few years ago so I can't remember all the details. The ride from Ixtapa to Acapulco was approximately 4 hours, and it was interesting. If we went to Puerto Vallarta, we would look into taking a bus to Manzanillo as we own a timeshare in Manzanillo.