The 2021 Road Race Showcase at Road America was a sports car race sanctioned by the International Motor Sports Association (IMSA). The Race was held at Road America in Elkhart Lake, Wisconsin on August 8, 2021. The race was the eighth round of the 2021 IMSA SportsCar Championship and the fifth round of the WeatherTech Sprint Cup.

The Mazda RT24-P also known as the Mazda Road to 24 – Prototype is a Daytona Prototype International built to the 2017 IMSA DPi regulations. The car is designed and built by Mazda Motorsports, in collaboration with Multimatic Motorsports, and is based on the Riley-Multimatic Mk. 30 LMP2 chassis. This car is eligible for use in the Daytona Prototype International (DPi) class of the IMSA sanctioned WeatherTech Sportscar Championship. It made its racing debut at the 2017 Rolex 24 at Daytona, with SpeedSource Race Engineering, running under the Mazda Motorsports banner. There have been plans to open the car to customer sales, although none have come to fruition so far.