Red Bull U.S. Grand Prix Mazda Raceway Laguna Seca July 10, 2005 Number of spectators Friday: 40,520 Saturday: 55,201 Sunday: 57,932 Total: 153,653 The Red Bull U.S. Grand Prix at Mazda Raceway Laguna Seca drew more fans over the three days than all but four 2004 Grands Prix (Jerez, Catalunya, Sachsenring and Valencia), topping Welkom, Le Mans, Mugello, Assen, Rio, Donington Park, Brno, Estoril, Motegi, Losail, Sepang and Phillip Island.