Swimming THE OLYMPIC STADIUM The swimming stadium comprises the following. Indoors, all year round: Olympic swimming pool, with ten 50-metre lanes – 2 m deep. Pool for diving and other activities, 25-m long – 11-m wide – 1.20 to 3.60 m deep, with two 1-metre diving boards and a 3-metre diving board. Grandstand with capacity for up to 1,000 spectators. Outdoors Olympic swimming pool, with ten 50-metre lanes - 2m deep (covered with an inflatable dome from October to May). Pool for diving 24 x 18 m - 5 m deep - with a diving tower with 5, 7 and 10-metre platforms, two 1-metre diving boards and two 3-metre diving boards. Pool with ten 25-metre lanes.