NASCAR is set to implement a major update to its 750-horsepower rules package for the 2026 Cup Series season, part of a broader effort to enhance competition and improve the quality of racing on shorter circuits. In tandem with the rules update, five tracks currently classified as intermediate ovals will be redefined under the short track rules package.
The revised 750-horsepower package will include aerodynamic changes aimed at reducing downforce and increasing mechanical grip. These adjustments are designed to foster closer racing, more passing opportunities, and greater emphasis on driver skill particularly on tracks where aero sensitivity has previously limited side-by-side action.
As part of this initiative, NASCAR will reclassify the following five tracks to the short track package:
Track Name
Current Classification
Length
Rationale for Reclassification
Bristol Motor Speedway
Short Track
0.533 mile
Already a short track; will now use the updated 750 HP package for consistency.
Darlington Raceway
Intermediate
1.366 miles
Unique layout and abrasive surface produce short track-style racing.
Dover Motor Speedway
Intermediate
1.0 mile
High tire wear and tight, rhythm-based racing resemble short track dynamics.
Nashville Superspeedway
Intermediate
1.33 miles
Concrete surface and braking zones favor mechanical grip over aero.
World Wide Technology Raceway at Gateway
Intermediate
1.25 miles
Tight corners and braking-heavy layout mimic short track racing.
The reclassification reflects NASCAR’s evolving approach to track categorization, focusing more on how a track races than its raw length. By aligning these tracks with the short track package, NASCAR aims to deliver a more consistent and competitive product across the schedule.
Got that giddy up w/ 750 horses 🐴 https://t.co/DW3Ns8OCKv pic.twitter.com/j8GSUjtu67
— RFK Racing (@RFKracing) November 12, 2025
Teams began testing the updated package during the 2025–26 off-season at Bristol with additional tests to be held at North Wilkesboro Speedway.