Douglas County Fairgrounds Complex and Speedway 2110 Southwest Frear Street, Roseburg, OR 97470, Multipurpose year round complex that hosts over 1,400 events annually and features a 5,000 seat Speedway for enjoying stock car racing. This complex is available for rent for weddings, conferences, conventions, trade shows, banquets, equestrian events, rodeos, concerts, and special events., 541-957-7010