IMSA GT3 Cup Challenge Canada

The Ultra 94 GT3 Cup Challenge Canada by Michelin is a one-make racing series based in Canada utilizing Porsche 911 GT3s.

The Ultra 94 GT3 Cup Challenge Canada by Michelin features semi-professional drivers racing head to head in one of the largest single-make series in North America. The multi-class structure of the series teaches drivers essential skills for an eventual career in Porsche Supercup or the American Le Mans Series.

The series is divided into two classes; the Platinum Cup, featuring the more powerful 2010–2012 Porsche 911 GT3 Cup cars, and the Gold Cup, which includes 2005½–2009 Porsche 911 GT3 Cup cars. Both classes race on Michelin racing tires.

The series is sanctioned by the International Motor Sports Association, and is a development series to the American Le Mans Series. The current series Race Director is Randy Hembrey.