The service was initially due to begin in April 2020 but was postponed due to the coronavirus pandemic.
Tickets went on sale on January 24 with an initial end-to-end fare of €5, with the operator selling over 10,000 tickets on the first day.
Tickets are initially available through the Avlo website, but will also be available on the Renfe website from February 1.
The service will operate on the Madrid - Barcelona - Figueres high-speed line, with additional stops in Guadalajara, Calatayud, Zaragoza, Lleida, Tarragona, and Girona.
Renfe says that it plans to offer an initial service of four journeys per direction per day, with future frequency adjusted according to demand. The service will be operated using a fleet of five modified Talgo class 112 trains with a seating capacity for 438 passengers, 20% more than conventional class 112 trains.
Renfe says that the service’s anti-Covid sanitation protocols will be certified by the Spanish Association for Standardisation and Certification (Aenor) and Swiss certification company SGS.