Book travel from Barcelona to Venice at the Rail Europe Web site (see Resources below) or call (877) 257-2887.
Choose your class of travel. Economy is the least expensive. Premiere will cost significantly more.
Book the first leg of your journey, from Barcelona-estacio De Franca train station to the Paris-Austerlitz station. This trip takes approximately 12 hours.
Complete the reservation for this part of the trip and print a copy of your confirmation page.
Book the second part of your trip, from the Paris-Bercy station to the Santa Lucia train station in Venice (Stazione Ferroviaria S. Lucia). Be sure to leave plenty of time to take a taxi between stations in Paris.
Bring your confirmation pages with you on your trip.