The season began on 4 May at Brands Hatch and ended on 8 September at the Hungaroring.
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.
[2] Zolder was initially replaced by the Red Bull Ring, before Zandvoort was chosen to host a race weekend.
Individual drivers are required to participate for a minimum of 25 minutes in order to earn championship points in any race.