Arcadia Lake Splash n Dash is Sunday, the 15th at 8:30am. Registration price increase happens at Midnight 6/11/14. Race is a 500 yard open water swim, 3K (1.86 mile) run. USAT Sanctioned Aquathlon. Registration/Information is on Signmeup and there is a link on the TRI-OKC Races/Events Page. This race is at the SPRING CREEK park, which is on SE 15th St. exit off of I35. 15th St will take you directly to Arcadia Lake and the race site.