Super Mac Race

The Super Mac Race is a non-periodic 568-mile (about 500 nautical miles) sail boat race from Chicago, Illinois to Port Huron, Michigan, or vice versa. Recent editions have been jointly sponsored by the Chicago Yacht Club, Bayview Yacht Club and Port Huron Yacht Club. The 2015 race was promoted as "The Longest Fresh Water Race on Earth," a debatable claim.

The race was originally known as the "Centennial Race" in 1975, then the "Chicago-Sarnia International Yacht Race" for several years, and then the "Millennium 600" before it was officially called the Super Mac. Although there are "Super Mack" references in newspapers dating back to 1978, the race wasn't officially known as the Super Mac until the 2009 & 2015 editions. Start & finish locations, courses and lengths, and sponsoring yacht clubs have varied over the 40-year history.