The series is open to Le Mans Prototypes and grand tourer-style racing cars divided into four categories.

The series announced a provisional schedule on 1 September 2017 that shifted the season calendar from a spring to autumn layout with the 24 Hours of Le Mans marque event held in the middle of the championship, to one running from the May 2018 and to June 2019, including two runnings of Le Mans.

[2][3][4] The schedule was revised two weeks later with the announcement of the eighth round of the championship, returning to Silverstone Circuit in the United Kingdom.

The unannounced event was originally planned for February 2019, with negotiations taking place over a return to Mexico City.

With the Mexico City deal failing to materialize, the event at Silverstone was moved to August 2018 to bridge the gap between Le Mans and the Asian rounds of the series starting in October.

A single bonus point was awarded to the team and all drivers of the pole position car for each category in qualifying.