4 horas de Watkins Glen

🏁 Official Briefing – 4-Hour Endurance Race

📅 Date: July 12, 2025

📍 Location: Watkins Glen International

⏱️ Duration: 4 hours

🌦️ Weather: Variable, with a slight chance of rain

📋 General Rules

🚗 Car Composition:

.Each car may be driven by 1, 2, or 3 drivers

.Driver changes are mandatory only for teams with 2 or 3 drivers.

.Teams with only 1 driver are exempt from the mandatory minimum time and may complete the entire race with the same driver.

.Teams with multiple drivers must ensure a maximum of 2 hours of total driving time divided among the drivers.

⏱️ Time per Driver:

.1 driver: May complete the 4 hours alone, without restrictions.

.2 drivers: Each driver must drive for at least 1 hour.

.3 drivers: Each driver must drive a minimum of 40 minutes and a maximum of 2 hours and 30 minutes.

.Driver changes must be made with the car completely stopped in the pit area.

🛞 Tires:

.Each team will be entitled to 6 sets of tires for the entire race.

.Any combination of slick (dry) and rain tires is permitted..

The choice of sets (quantity of each type) must be made before the start.

.No extra tires will be supplied during the race.

.The management of wear, choice, and strategic use of tires is the sole responsibility of the teams.

🔧 Pits and Maintenance:

.All stops for tire changes or driver changes must be made in the pit area.

.Teams must respect the speed limit in the pit lane.

🟢 Start and Classification:

.The start will be a rolling start, after a presentation lap.

.The starting order will be determined by the qualifying session.

.The driver who starts the race does not have to be the same as the one who qualified.