Overview
- The series returns to the Adelaide Parklands Circuit on December 3–6, 2026 for a two‑race finale supporting the Supercars Championship’s Adelaide Grand Final, its first Adelaide appearance since 2023.
- A six-round 2026 calendar is confirmed: Phillip Island (Mar 27–29), The Bend (May 8–10), Queensland Raceway (Jun 12–14), Hidden Valley (Jul 24–26), Sydney Motorsport Park (Sep 18–20) and Adelaide (Dec 3–6).
- Hidden Valley Raceway joins the schedule for a maiden visit on July 24–26, expanding the championship’s national footprint.
- Adelaide replaces Hampton Downs as the finale, while Sandown drops off the GTWCA schedule but will host the GT4 Australia finale from October 30 to November 1.
- GT World Challenge Australia will headline the Shannons SpeedSeries alongside GT4 Australia, Ferrari Challenge Trofeo Pirelli Australasia and the new Mustang Cup, with an official Phillip Island test day on March 17.