There is no bus, probably because there are two train services.
Nick is right -- there is no direct bus service as there are 2 separate train lines going there.
If the OP hates trains for whatever reason, though, it would be technically possible to reach Como by bus as follows:
- #Z150 bus from outside Zara metro stop in Milan to Cermenate: http://www.airpullmanspa.com/carico/documenti/z150(7).pdf
Why anyone in his right mind would want to travel 2.5 hours by bus instead of less than an hour by train is another thing but after all, that's none of our business, is it?
-:- Message from TripAdvisor staff -:-
This topic has been closed to new posts due to inactivity. We hope you'll join the conversation by posting to an open topic or starting a new one.
To review the TripAdvisor Forums Posting Guidelines, please follow this link: http://www.tripadvisor.com/pages/forums_posting_guidelines.html
We remove posts that do not follow our posting guidelines, and we reserve the right to remove any post for any reason.