The Inaugural Las Vegas Grand Prix was the highest profile new sporting event in the world last year, and the biggest thing to hit Vegas since the city turned its focus to spectator sports. With 315,000 fans over 3-days (according to local news KTNV), it easily outdrew the first Sin City Superbowl, widely considered the biggest event in American sports, which garnered an official attendance of just 61,629, the lowest for any non-pandemic game (though the single day Las Vegas event record is still held by the Grateful Dead at Sam Boyd stadium in 1995 with around 125,000 fans).