the mug race is an annual sailing race held on st. johns river in the us state of florida. billed as the "world's longest river race", the course starts in palatka and ends in jacksonville. to compete, masts must be under 44 feet in order to clear all bridges along the course. the mug cup is awarded to the first boat to complete the 38.5 mile course from the starting line at memorial bridge to the finish line at buckman bridge. additionally, there are over 100 class specific trophies