Now I was looking forward to the thrill of pedaling amidst the green wine country, grand villas lining the Brenta canal, gently rolling green hill sides, the famous old university city of Padova and endless beaches at Chioggia and Pellestrina. The combination of cycling and art history makes this a wonderful, easy tour, suitable for beginners. See links below for info on showtimes and tourist information. You may take your bike on all trains except for the rapido, the express train. A supplement of 5000 Lire is required for your bike.
Trains run in every direction at every hour.
Check the following link for details. Forget cycling in Venice itself. There are too many bridges to cross. However, you may carry your bike aboard the bigger ferries crossing the Venetian lagoon. Ferries run almost every hour between Chioggia and Littorale di Pellestrina, Littorale di Pellestrina and the Lido, the Lido and Punte Sabbioni, and Venice.