The Warren County Prime Beef Festival returns September 5, 7-12, 2026, bringing a week of community pride and all things beef to Monmouth, Illinois. For generations, the Prime Beef Festival has celebrated the people, agriculture, businesses, and traditions that make Warren County special.

Saturday, September 12th:
8:00 - 10:00 am: 5K & Kids Fun Run @The American Legion
10:00 - Noon: Kid's Day Activities
10:00 - Noon: Touch a Truck @Monmouth Park

8:00 - 10:00 pm: Midway Concessions

Noon - Close: Swyear Amusements
5:00 - 10:00 pm: Industrial and Vendor Show
5:00 - 1:00 am: Beer Garden
6:00 pm: Power Wheels Demo
7:00 pm: Demolition Derby
Beer Garden Entertainment:
8:00 - 11:00 pm: Felix & Fingers Dueling Pianos