Registration: Track Rabbit

The Winter Race Series is hosted by Darren Dilley at Mac Track and provides organized, competitive kart racing throughout the winter months. The series is designed to keep drivers sharp during the off-season, with a relaxed but race-focused atmosphere that welcomes both experienced racers and newer participants.

Registration: Track Rabbit

The Winter Race Series is hosted by Darren Dilley at Mac Track and provides organized, competitive kart racing throughout the winter months. The series is designed to keep drivers sharp during the off-season, with a relaxed but race-focused atmosphere that welcomes both experienced racers and newer participants.

Registration: Track Rabbit

The Oregon State Karting Championship Series (OSKCS) is a long-running sprint kart racing championship presented by the Portland Karting Association. The series consists of 10 race rounds held across two established Oregon tracks: Mac Track and Pat’s Acres Racing Complex. OSKCS offers structured, competitive racing across multiple classes and attracts a mix of experienced drivers and newer competitors from across the region. With a history spanning more than 20 years, the series is a cornerstone of Oregon sprint karting, emphasizing consistent competition, points-based championships, and development of racecraft across varied track layouts.

Registration: Track Rabbit

The Saturation Cup is a six-hour motorcycle endurance race held at the Mac Track and features a classic Le Mans–style start. Designed as an endurance challenge rather than a sprint, the event emphasizes strategy, consistency, and teamwork. The name “Saturation Cup” reflects the spirit of the race: competitors embrace wet conditions, with rain not only expected but welcomed as part of the challenge.

Registration: Track Rabbit

The Oregon State Karting Championship Series (OSKCS) is a long-running sprint kart racing championship presented by the Portland Karting Association. The series consists of 10 race rounds held across two established Oregon tracks: Mac Track and Pat’s Acres Racing Complex. OSKCS offers structured, competitive racing across multiple classes and attracts a mix of experienced drivers and newer competitors from across the region. With a history spanning more than 20 years, the series is a cornerstone of Oregon sprint karting, emphasizing consistent competition, points-based championships, and development of racecraft across varied track layouts.

Registration: Track Rabbit

Road racing hosted by the Portland Karting Association is conducted on full-size road courses typically used by cars, including Portland International Raceway and Oregon Raceway Park. Unlike sprint racing, the entire circuit is used, with track lengths generally ranging from 2 to over 4 miles.

These longer, faster circuits place a strong emphasis on straight-line speed, stability, and aerodynamics. As a result, many road racing karts utilize full bodywork to improve aerodynamic efficiency. The discipline also includes Enduro (or “laydown”) karts, where the driver is positioned nearly flat to reduce drag and maximize top speed. Road racing karts may run many of the same engines used in sprint or sit-up classes, but are configured specifically for sustained high speeds and endurance-style competition.