Me and a friend are thinking about going from Athens to Meteora, spend two nights there, and then move to Corfu. Did anyone do this before? Is it a too long trip? From Athens to Meteora I know the train is about 5 hours, I just did not manage to get the real time to make it from there to Corfu.
To go from Kalambaka to Corfu you will have to take the bus from Trikala. You can see the available routes at http://ktel-trikala.gr/?module=default&pages_id=26&lang=en Make sure you call them to confirm the dates because from what I see, they only have 2 routes per week. Also you can find the routes from Kalambaka-Trikala at http://ktel-trikala.gr/?module=default&pages_id=28&lang=en
The bus from Trikala to Igoumenitsa takes about 3 to 3:30 hours and the ship to Corfu about 1:30 hour. You can find the ship routes at http://www.vrisko.gr/en/ferry-routes-greece/igoumenitsa/corfu/2014-05-06/
It is a nice trip to have, I'm sure you will love it :-)
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kilometer-wise it's not very far if you rent a car and drive. Not sure about the bus /train connections though. Having said that I am not sure you need two days in Meteora (for the main sightseeing that is), although the setting is indeed spectacular if you want to walk around/hike. You may want to split the time with one night in Metsovo which is a very beautiful village on your way to Corfu.