GT4 America Calendar

GT4 America is a premier sprint racing championship in North America, organized by SRO Motorsports Group and entering its seventh season in 2026. The series provides competitive GT4 racing across iconic circuits throughout the United States, featuring production-based sports cars from manufacturers including Aston Martin, Audi, BMW, Ford, McLaren, Mercedes-AMG, Porsche, and Toyota. With three distinct classes based on driver ratings, mandatory pit stops, and close racing action, GT4 America delivers accessible professional motorsport competition for teams and engaging on-track battles for spectators.

Championship Format and Race Structure

The GT4 America championship follows a consistent format that emphasizes sprint racing. Each event weekend features two 60-minute races, with a single qualifying session determining the starting grid for both races. Teams consist of two drivers who share the car, requiring mandatory mid-race pit stops for driver changes that introduce strategic variation into each race. Driver pairings compete in three classes determined by FIA driver ratings: Silver (marked by silver number panels), Pro-Am (black panels), and Am (red panels). Points are awarded to the top ten finishers in each class per race, creating multiple championship battles within a single race.

All events follow a three-day weekend structure designed to maximize track time while providing opportunities for fan engagement with drivers and cars. This format allows teams to refine their setup across practice sessions before qualifying and the two sprint races.

Technical Regulations and Balance of Performance

GT4 America utilizes the globally recognized GT4 platform, featuring production-based vehicles modified for racing that remain closer to their road-going counterparts than higher GT categories. These cars represent one of the least powerful GT racing classes, which contributes to close competition and driver skill becoming a decisive factor. SRO Motorsports Group maintains technical regulations and implements a Balance of Performance system to ensure competitive parity across different manufacturers and models, preventing any single car from dominating the championship.

2026 Season Calendar and Featured Events

The 2026 Pirelli GT4 America season consists of 13 races across seven rounds, beginning March 27 at Sonoma Raceway in California and concluding October 11 at Indianapolis Motor Speedway. The calendar includes established North American road courses such as Sebring International Raceway, Michelin Raceway Road Atlanta, Road America, and Barber Motorsports Park.

A standout event on the calendar is the Lone Star Enduro at Circuit of the Americas in April, which breaks from the standard sprint format with a three-hour endurance race. This marquee event awards double championship points and tests teams on long-run strategy, pit stop execution, and sustained driver performance over an extended distance.

Competitive Field and Notable Entries

The 2026 season features a full competitive field across all three classes. Notable entries include ACI Motorsports with multiple Porsche and BMW entries spanning all classes, Random Vandals Racing with defending Pro-Am champion Sam Craven in a BMW, and BimmerWorld campaigning BMW M4 GT4 entries. Kellymoss brings multiple Porsche entries, while teams like Precision Racing LA, Dome Motorsport, and Blackdog Racing add manufacturer diversity with Toyota, Mercedes-AMG, and McLaren entries respectively. The Am class includes actor and racer Frankie Muniz competing for TechSport Racing in a Ford Mustang GT4.

Fans follow GT4 America for its multi-class racing format that provides constant on-track action, the variety of professional-grade sports cars from leading manufacturers, and accessibility to drivers and teams throughout race weekends. The combination of sprint racing with the unique endurance event, competitive driver pairings across three classes, and championship battles that extend throughout the season make GT4 America a compelling series for motorsport enthusiasts.