Hallmarks of the F1 calendar, such as Silverstone and Spa, have been under pressure in recent years, as prospective entries have threatened their existence.
With the likes of Chicago and Thailand interested in hosting a grand prix, changes to the calendar will have to be made in order for them to materialise.
Two iconic venues could be under threat, with F1 CEO Stefano Domenicali revealing it has become increasingly difficult to envision two Italian races on the calendar.
According to Corriere Della Sera, Domenicali has admitted that having a grand prix in Monza and Imola is possible but will be difficult.
“There is a queue to host F1, because more and more countries, in Asia, in the USA but also in Europe, are asking to enter and we will be forced to make choices,” he said.
“If today there is no desire to invest in the long term, if there is not a change of pace on the infrastructures and on the sidelines for the fans, some countries risk losing the GP.
“Today F1 is more important than the football World Cup. Italy is a central part of the calendar and there is no discussion, but soon we will need to address together the quantity of resources, not only economic, to invest for the future of Monza, and possibly Imola."