Full-time IMSA WeatherTech SportsCar Championship drivers Helio Castroneves and Juan Pablo Montoya will join a handful of other 2018 Rolex 24 participants this weekend in the Race of Champions, which will be held in the Middle East for the first time in Riyadh, the capital city of Saudi Arabia. The Race of Champions features drivers from a variety of motorsports disciplines competing in identical race cars typically on racetracks constructed inside stadiums.