2026 Twin Falls County Fair: Rodeo, Music, Monster Trucks, and MoreThe Twin Falls County Fair and Magic Valley Stampede Rodeo is September 2nd through the 7th, and the theme this year is ‘Stars, Stripes, and Stampedes’. The Twin Falls County Fair starts on September 2nd with the Jr. Rodeo. 2026 Twin Falls County Fair and Magic Valley Stampede Daily Schedule Over the Six Days, the Twin Falls County Fair is Bringing Rodeo Action, Monster Trucks, a Country Music Legend, Carnival Fun, and More. READ ALSO: Jo Dee Messina Coming to the 2026 Twin Falls County FairTickets are required for fair admission, and admission is included in paid nightly arena event tickets. LOOK: The Ponies Pistols and Pistons Show at the Twin Falls County Fair I've said this before - that the Ponies, Pistols, and Pistons show at the Twin Falls County Fair is the most exciting and action-packed show at the fair.