Board Thread:Questions and Answers/@comment-39.218.244.228-20140305031906/@comment-5596770-20140305053248

You have to make from one passenger/mail train. This can be accomplished by using a large electric train on a shorter local destination, or by using a smaller electric train and sending it to a long (1 week?) local destination. Since the local destination will tell you how much profit the train will generate, it should be obvious how long you need to send the train out to make the required amount.

Alternatively, you can have a friend send you an international train with at least that amount.