Calling all triathletes between the ages of 7 and 23. Do we have a triathlon for you - the Pleasant Prairie Junior Triathlon. It's part of the USAT's Development Series - Future Stars of Multisport! This triathlon takes place in Prairie Springs Park (45 minutes north of downtown Chicago and 35 minutes from downtown Milwaukee). Swim in clean, spring-fed Lake Andrea. Bike and run in Prairie Springs Park.