IMSA  · 2025 Completed

Watkins Glen

Watkins Glen International · Watkins Glen · 20 Jun 2025 · 4 sessions

Session Times

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Practice 1
Practice 2
Qualifying
Race

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About Watkins Glen

The IMSA WeatherTech SportsCar Championship returns to Watkins Glen International for Sahlen's Six Hours of The Glen, a premier endurance race in North American motorsports. This six-hour competition brings together the world's top prototype and GT cars on one of the continent's most challenging road courses. The event serves as a round in both the WeatherTech Championship and the IMSA Michelin Endurance Cup.

The Circuit at Watkins Glen International

Watkins Glen International, known as "The Glen," sits in Dix, New York, near the village of Watkins Glen at the southern tip of Seneca Lake in the Finger Lakes Region. NASCAR owns and operates this permanent road course facility.

The Grand Prix Circuit measures 3.4 miles (5.427 km) and contains 11 turns. The layout features several notable sections that test driver skill and car setup. The high-speed "Esses" flow through Turns 2 to 5, demanding precision and confidence. The "Boot" section adds technical corners to the lap, while the "Bus Stop" chicane interrupts the back straight and creates overtaking opportunities.

Elevation changes define the character of Watkins Glen. The track rises and falls approximately 26 feet from its lowest to highest points. Turn banking ranges from 6 to 10 degrees across different corners. The circuit holds an FIA Grade 2 certification, confirming its safety standards and international racing quality.

Race Format and Competitor Classes

Sahlen's Six Hours of The Glen runs for six hours, testing both machine reliability and driver endurance. The race features all four classes of the IMSA WeatherTech SportsCar Championship: Grand Touring Prototype (GTP), Le Mans Prototype 2 (LMP2), GT Daytona Pro (GTD PRO), and GT Daytona (GTD). This multi-class format creates complex racing situations as faster prototypes navigate through GT traffic.

The WeatherTech Championship fields 45 full-season entries across all classes. Michelin Endurance Cup races expand the grid to 54 entries, with additional GTD PRO and GTD competitors joining the field. IMSA uses a Leader Light System with colored LED panels mounted on each car, helping fans identify position within each class during the race.

Grand Touring Prototype

GTP represents the pinnacle of IMSA technology. These prototype race cars combine hybrid powertrains with manufacturer-specific internal combustion engines. The hybrid system recovers kinetic energy during braking, providing additional power for acceleration. Manufacturers including Acura, Aston Martin, BMW, Cadillac, Lamborghini, and Porsche develop unique engines and bodywork within the technical regulations.

Le Mans Prototype 2

LMP2 cars compete as closed-cockpit prototypes built by approved constructors. These machines also race in the FIA World Endurance Championship, creating a global standard for this class. LMP2 provides a cost-controlled prototype option for teams and serves as a development path for drivers and engineers.

GT Daytona Classes

Both GTD PRO and GTD utilize cars built to FIA GT3 technical regulations. These production-based race cars come from manufacturers such as Aston Martin, BMW, Chevrolet, Ferrari, Lamborghini, Lexus, Mercedes-AMG, and Porsche. GTD PRO permits factory teams and professional driver lineups, while GTD focuses on customer teams with mixed driver classifications.

Racing History at Watkins Glen

The first post-World War II road race in the United States took place at Watkins Glen on October 2, 1948. That original event used a 6.6-mile course on public roads through the village. The permanent circuit opened in 1956 with a 2.3-mile layout, establishing a dedicated racing facility.

Formula One chose Watkins Glen to host the United States Grand Prix from 1961 to 1980, bringing international recognition to the circuit. The track received multiple "Best Staged Grand Prix" awards during this period. Sports car endurance racing began here in 1968, eventually becoming the "Six Hours at The Glen" format that continues today.

Track modifications have enhanced safety and competition over the decades. "The Boot" section was added in 1971, extending the lap length and adding technical corners. The "Bus Stop" chicane came in 1992, slowing cars on the back straight. After financial challenges in the early 1980s, Corning Enterprises and International Speedway Corporation revitalized the facility, reopening it in 1984. NASCAR later became the sole owner.

The Watkins Glen Region

Watkins Glen International sits within the Finger Lakes region of New York State. The area features natural beauty, including Watkins Glen State Park with its gorge and waterfalls. Local vineyards and wineries have established the region as a wine destination. The combination of motorsports competition and regional attractions draws visitors throughout the racing season.

The circuit regularly hosts professional racing series and also offers driving opportunities for visitors on non-race days. Fans can experience the track layout behind a pace car, seeing firsthand the elevation changes and corner combinations that challenge professional drivers.

Watkins Glen has earned recognition as one of North America's fastest and most demanding road courses. The combination of high-speed sections, technical corners, and elevation changes creates a complete test for IMSA teams. Six-hour races at this circuit reward careful strategy, consistent driving, and reliable machinery. The multi-class racing format adds strategic complexity as teams manage traffic and different pit stop windows across the long race duration.

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