Legends car racing is one of the fastest growing and most affordable types of American motorsports. Powered by a motorcycle engine, a Legends Car is a purpose-built race car designed to resemble the legendary American automobiles of the 1930s and '40s. Drivers range in age from 12 to 65+ years old.

NHMS operates two series at the speedway as a part of U.S. Legend Cars International. The cars race the Moat Mountain Road Course Series on the 1.6-mile road course and the Sign Works Oval Series on the 0.25-mile mini-oval.

The Granite State Legends Cars dealership emphasizes the growth of developmental racing at NHMS.  The store is located in the S1 parking lot on property. It sells everything needed to begin a racing career in either legends or bandoleros, including ready-to-race cars.