After the 1996 prologue-style, 3-race season that ended at the 80th Indianapolis 500, the 1996–97 season had just two further races in calendar year 1996, at New Hampshire International Speedway, a former CART venue, and a barely inaugurated Las Vegas Motor Speedway. On 9 October 1996, the IRL decided to revert to a calendar-based format for 1998, moving the intended end of the 1996–97 season at Indianapolis in May to Las Vegas in October.