2018 Tire Rack SCCA CAM Challenge Invitational
CAM Challenge Invitational takes place over the course of the weekend using the same course each day.
The first day set is aside for class competition with the winners in each class determined by adding their best time from three morning runs added to the best time from their three afternoon runs. This is followed by an evening class awards dinner.
On Sunday, the event shifts to the Challenge to determine an overall event winner. The process begins with a qualifying round of three runs for each driver to determine the top 16 drivers in each class. This is followed by a series of elimination rounds for each class with the field going from 16 to 1 driver that will be the class representative in the Top Eliminator round. The Top Eliminator round will pit the top driver from each class using a class equalization index (PAX) to determine the Tire Rack CAM Challenge Invitational Champion.