Between Barcelona and Paris, a fast train runs three times a day: at 9:20, 13:20 and at 16:20, en route for about 6, 5 hours. The price of an adult ticket is 130-180 EUR. The children's tariff is about 30% cheaper.

In Nice, you need to go with a transfer, because there are no direct trains. You can drive to Toulouse, on the road about 3 hours. The train departs every day at 10:24, the ticket price is from 55 EUR, or to Montpellier - 5 trains a day, about 3 hours on the way, the ticket price is from 50 EUR. Having reached the territory of France, it will be necessary to change to local electric trains.

In my opinion, the most optimal means of transportation will be the plane, so as in the way only 1 hour and 15 minutes, there are many flights, cost about 40 - 80 EUR. Can also take a car for hire, en route about 7 hours, but this is quite an expensive way, as the cost of rental and insurance will be high because of the two countries of use.

More information about the railway communication can be found on the website www.renfe.es, there you can study in detail the schedule, routes and prices.