Eight seconds doesn't sound like much, until you imagine eight seconds strapped to a 2,000-pound bull with an attitude! It's the original ‘extreme' sport, and it's coming to Billings in the form of the PBR NILE Invitational. Forty-five of the toughest men in the world, elite members of the Professional Bull Riders, Inc. (PBR), take on some of the most ferocious bulls in America. It's man against beast, as the most accomplished bull riders in the world, representing countries like Australia and Brazil, as well as America, meet the nation's meanest bulls in the greatest show on dirt. The PBR NILE Invitational in Billings is part of the elite PBR Built Ford Tough Series.