High Quality Content by WIKIPEDIA articles! The 1975 Long Beach Grand Prix was the inaugural running of the Grand Prix of Long Beach. The race was held September 28, 1975, on a 2.02-mile (3.25 km) temporary street circuit. The race was round 7 of the Sports Car Club of America/USAC Formula 5000 Championship. An estimated 65,000 spectators saw Brian Redman win the race.