Logrolling (sport)

Log rolling, sometimes called birling, is a sparring sport involving two competitors, each standing on one end of a free-floating log in a body of water. The two battle to dislodge each other from the log while keeping their own footing on it by spinning and kicking it and various other means. In the United States, an official organized logrolling competition is called a roleo.

In the related sport of boom running, competitors each run an adjacent boom, or coupled line, of floating logs in both directions, vying to finish first without falling into the water.