Burger King Share: Restaurants, Food & BeveragesDining / EateriesDining - Fast Food Burger King Visit Website 906 South Black River Street Sparta, WI 54656 608.269.1615 608.269.1481 (fax) Facebook Hours: Mon-Thu: 6:00 am - 12:00 amFri-Sat: 6:00 am - 1:00 amSun: 6:00 am - 12:00 am About Map About Fast Food - Burgers, Salads, Sandwiches. We make it your way at Burger King. Directions Right off Interstate 90, Exit 25