Simplify the following text for a Grade 6 native English-speaking person.
Original: The Daytona 500 is a 500 m-long NASCAR Sprint Cup Series race held annually at the Daytona International Speedway in Daytona Beach , Florida .
Simplified: The Daytona 500 is an auto race held in Daytona Beach , Florida . It is the opening event of the NASCAR Sprint Cup Series .