The offer applies to anyone aged 18-30 who is an EU citizen and a resident in Spain. It includes discounts of up to 90 percent on state-run buses and short-to-medium distance trains.

https://www.thelocal.es/20230510/spain-to-pay-national-bus-and-train-tickets-for-young-people-this-summer?tpcc=newsletter_subscriber&utm_source=newsletter&utm_medium=email&utm_campaign=how_to_get_a_100_mortgage_in_spain_and_more_travel_discounts_for_young_people&utm_term=2023-05-10