The 128th Johnson County Old Settlers is a free family event hosted in Downtown Olathe. Join over 80,000+ attendees over the span of 3 days, September 10-12; and includes Kansas’ largest parade Saturday at 10, an Auto Show, Art & Crafts, Carnival, Commercial Vendors, Free Concerts with Phil Vassar, and The Phil Collins Experience Friday and Saturday night, a Flower Show, and food run by local non-profit groups supporting a great cause.