Indiana University Natatorium Swimming Championships, local/regional meets, as well 11 Olympic Trials in swimming, diving, and synchronised swimming. The main competition pool of the Natatorium is 50-meters with eight racing lanes. Two moveable bulkheads allow for long or short course events as well as hosting water polo and synchronized swimming. The seating capacity of the Natatorium is 4,700, making it the largest indoor pool in the United States. There is also room for additional seating of 1,500 on deck. The depth of the pool is at the ends and at center of pool. Water temperature is kept at . The main pool contains
Gateway Indoor Gateway Indoor Gateway Indoor (also called Gateway Indoor Percussion, Gateway, and G-dub) was an indoor drumline based in St. Louis, MO. The group competes in the Percussion Independent World division of Winter Guard International, as well as the Mid-Continental Color Guard Association circuit. Gateway Indoor was started in 2004 by Paul Richardson and Mike Davis, and was named for the Gateway Arch in St. Louis. Since 2004, the group has been a Percussion Independent World class finalist 8 times, and has scored as high as 5th place. Gateway Indoor is an independent percussion ensemble that competes in WGI and MCCGA