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
1927 Indianapolis 500 1927 Indianapolis 500 The 15th International 500-Mile Sweepstakes Race was held at the Indianapolis Motor Speedway on Monday, May 30, 1927. First-time starter George Souders wins by eight laps, the largest margin since 1913. Souders becomes the first driver to win the full-500 mile race solo, with neither help from a relief driver, nor accompanied by a riding mechanic. Four-lap (10 mile) qualifying runs were utilized. Frank Lockhart won the pole position with a speed of 120.10 mph. Lockhart set a new 1-lap track record on his final lap. For 1927, riding mechanics were optional; however, no teams utilized them.