The World Rowing Masters Regatta is held annually and open to rowers 27 years of age and older. Rowers race in age categories starting at 'A' for those with a minimum age of 27. The categories continue through to 'K' for crews with an average age of 85 or more.
There is no progression system so a medal is awarded to the winner of each race. The event is held over four days with the final day including mixed crews.