"An endurance series for Gr.3 cars; racing models transformed from roadcars." - in-game text

The Gr.3 Endurance Series is a 7 race event that appears in Gran Turismo Sport. It was added to GT League mode in update v1.11. The event is housed in the Endurance League of GT League mode.
This event, aimed at experienced drivers, is, as implied by the name, restricted to cars of the Gr.3 category.
Event Restrictions[]
- Maximum Power - None
- Minimum Weight - None
- Maximum Tyre Rating - Racing: Soft
- Allowed vehicles: Limited to Group 3 (Gr.3) race cars
Races[]
- Autodromo Nazionale Monza: 30 laps
- Mount Panorama: 25 laps
- Dragon Trail - Gardens: 30 laps
- Fuji International Speedway: 30 laps
- Tokyo Expressway - South Inner Loop: 30 laps
- Autopolis International Racing Course: 30 laps
- Nürburgring Nordschleife: 60 minutes
Prize Structure[]
- 1st: Cr. 440,000
- 2nd: Cr. 230,000
- 3rd: Cr. 130,000