The Eastern Rite Mass I sometimes attend is at a Byzantine Catholic Church. Including the prayers (chants) prior to the formal Mass, it takes about two hours.
Our Archdiocese also offers a Latin Mass each Sunday, although the Archbishop clearly doesnt want too many people to know about it. It is not advertised (I only learned of it from a friend who attends a relatively orthodox parish) and it is held in a small chapel located in a flop-house section of downtown where parking is almost impossible, even on a Sunday morning. I think that our pro-abortion, pro-homosexuality Archbishop simply wants to be able to report to Rome that he offers the Latin Mass.
I just had to ensure that I got a seat in front of a fan!