The season began on 6 April at Sepang and ended on 28 September at Shanghai.
It was the first season of the unification of GT3 sprint series across the globe under the World Challenge name.
[1] At the annual press conference during the 2018 24 Hours of Spa on 27 July, the Stéphane Ratel Organisation announced the first draft of the 2019 calendar.
Entries are required to complete 75% of the winning car's race distance in order to be classified and earn points.
Individual drivers are required to participate for a minimum of 25 minutes in order to earn championship points in any race.