Train from Zell Am See to Munich is easy. Zell has a train station and you have to switch trains once in Woergl. The fastest connection take 2h:39min.
Make sure you take the connection through Woergl (they offer connections through other towns that take much longer).
Don't know whether this comes through but here is search for Deutsche Bahn:
http://reiseauskunft.bahn.de/...mp;rt=1&OK#focus

You can start your own search from here: http://www.bahn.de/...w/USA/en/index.shtml

Plenty of hotels around the station in Munich.
E.g. Maritim really in walking distance from the station. Plenty of other choices but your budget will drive choice (Munich is expensive).
The next morning you would take the S8 (regional train to get to the airport (ca 30. min ride).
Another good option is the City Hilton. For that you would get off at Ostbahnhof which is Munich 2nd train station, instead of Hauptbahnhof (main station).
The City Hilton has a station right underneath with direct access from the hotel, where you can catch the S8 the next morning.

I suppose you have your bike? For the train from Zell you will probably pay an extra fee. As you would be riding the morning train to the airport there might be limits with taking your bike during rush hour. Not sure how that works as normal luggage is no problem and common on that train.


Good luck with your race.