1987 Indianapolis 500 Al Unser, Sr. held off Roberto Guerrero by 4.496 seconds, to win his record-tying fourth Indianapolis 500 victory. By leading the final 18 laps, Unser, Sr. tied the all-time record for most laps led in Indy 500 competition, and, at 47 years of age, also became the oldest winner of the 500. Mario Andretti's dominance of the month, and subsequent failure to achieve victory, was largely unprecedented in modern times. He led the practice speed chart on 11 of the 17 days (he participated in only 13 days), won the pole position, won the pit stop contest, had the fastest
1952 Indianapolis 500 1952 Indianapolis 500 The 36th International 500-Mile Sweepstakes was held at the Indianapolis Motor Speedway on Friday, May 30, 1952. The event was part of the 1952 AAA National Championship Trail and was also race 2 of 8 in the 1952 World Championship of Drivers. Troy Ruttman won the race for car owner J. C. Agajanian. Ruttman, aged 22 years and 80 days, set the record for the youngest 500 winner in history. It was also the last dirt track car to win at Indy. Ruttman's win also saw him become the youngest winner of a World Drivers' Championship race,