700 people take part in stand up paddleboard race on the Seine Around 700 stand-up paddleboarders, both professional level and amateur, crossed Paris on the Seine between the National Library of France and the Quai de Javel. The race -- 13.5 kilometres in length for professional participants and 11 kilometres for amateurs -- is known as the Nautic Sup Paris, and is organized as part of the Nautic Paris Boat Show, which is held from 2 December until 10 December. IMAGES