Join us for the 4th annual USAT-sanctioned 370 Lakeside Triathlon! This race begins with a beautiful beach start at 370 Lakeside Park. Enjoy the lake swim, and scenic fast bike course on the country roads of St. Charles County, and finish your race with a run on the flat park trails. We offer a variety of race options from a 5k run, super sprint, or sprint for newbies, up to half distance!