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2026 Window World 450
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The 2026 Window World 450 was a NASCAR Cup Series race held on July 19, 2026, at North Wilkesboro Speedway in North Wilkesboro, North Carolina. Contested over 450 laps on the 0.625-mile-long (1.006 km) asphalt short track, it was the 21st race of the 2026 NASCAR Cup Series season, as well as the fourth race of the 2026 NASCAR In-Season Challenge.