the 2018 24 hours of daytona (formally the 56th rolex 24 at daytona) was an international motor sports association (imsa)-sanctioned 24-hour automobile endurance race for daytona prototype and grand touring sports cars held at the daytona international speedway combined road course in daytona beach, florida, on january 27–28, 2018. it was the first of twelve 2018 weathertech sportscar championship races, the 56th edition of the event, and the first of four rounds of the north american endurance cup.