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| Year | Race Date | Oldest Driver | Youngest Driver | ||||
| Name | Birthdate | Age | Name | Birthdate | Age | ||
| 1967 | May 30-31 | Al Miller | 11/23/1923 | 43 y, 188 d | Jochen Rindt | 4/18/1942 | 25 y, 42 d |
| 1968 | May 30 | Bob Veith | 11/1/1924 | 43 y, 211 d | Mike Mosley | 12/13/1946 | 21y, 169 d# |
| 1969 | May 30 | Jack Brabham | 4/2/1926 | 43 y, 58 d | Mike Mosley | 12/13/1946 | 22 y, 168 d# |
| 1970 | May 30 | Jack Brabham | 4/2/1926 | 44 y, 58 d | Mike Mosley | 12/13/1946 | 23 y, 168 d |
| 1971 | May 29 | Art Pollard | 5/5/1927 | 44 y, 24 d | Mike Mosley | 12/13/1946 | 24 y, 167 d |
| 1972 | May 27 | Lloyd Ruby | 1/12/1928 | 44 y, 136 d | David "Salt" Walther | 11/22/1947 | 24 y, 187 d |
| 1973 | May 30 | Lloyd Ruby | 1/12/1928 | 45 y, 138 d | David "Salt" Walther | 11/22/1947 | 25 y, 189 d |
| 1974 | May 26 | Lloyd Ruby | 1/12/1928 | 46 y, 134 d | Pancho Carter | 6/11/1950 | 23 y, 349 d |
| 1975 | May 25 | Lloyd Ruby | 1/12/1928 | 47 y, 133 d | Pancho Carter | 6/11/1950 | 24 y, 348 d |
| 1976 | May 30 | Lloyd Ruby | 1/12/1928 | 48 y, 139 d | Spike Gehlhausen | 11/19/1954 | 21 y, 193 d |
| 1977 | May 29 | Lloyd Ruby | 1/12/1928 | 49 y, 137 d | Pancho Carter | 6/11/1950 | 26 y, 352 d |
| 1978 | May 28 | Jim McElreath | 2/18/1928 | 50 y, 99 d | Spike Gehlhausen | 11/19/1954 | 23 y, 190 d |
| 1979 | May 27 | Jim McElreath | 2/18/1928 | 51 y, 98 d | Spike Gehlhausen | 11/19/1954 | 24y, 189 d |
| 1980 | May 25 | Jim McElreath | 2/18/1928 | 52 y, 97 d | Tim Richmond | 6/7/1955 | 24 y, 353 d |
| 1981 | May 24 | Bobby Unser | 2/20/1934 | 47 y, 93 d | Josele Garza (R) | 3/15/1962 | 19y, 70d*# |
| 1982 | May 30 | A.J. Foyt | 1/16/1935 | 47 y, 134 d | Josele Garza | 3/15/1962 | 20 y, 76 d# |
| 1983 | May 29 | Dick Simon | 9/21/1933 | 49 y, 250 d | Al Unser, Jr. (R) | 4/19/1962 | 21 y, 40 d |
| 1984 | May 27 | Dick Simon | 9/21/1933 | 50 y, 249 d | Michael Andretti (R) | 10/5/1962 | 21 y, 235 d |
| 1985 | May 26 | Dick Simon | 9/21/1933 | 51 y, 247 d | Michael Andretti | 10/5/1962 | 22 y, 233 d |
| 1986 | May 31 | Dick Simon | 9/21/1933 | 52 y, 252 d | Michael Andretti | 10/5/1962 | 23 y, 238 d |
| 1987 | May 24 | Dick Simon | 9/21/1933 | 53 y, 245 d | Davy Jones (R) | 6/1/1964 | 22 y, 357 d |
| 1988 | May 29 | Dick Simon | 9/21/1933 | 54 y, 251 d* | Billy Vukovich, III (R) | 8/31/1963 | 24 y, 272 d |
| 1989 | May 28 | A.J. Foyt | 1/16/1935 | 54 y, 133 d | John Jones | 10/19/1965 | 23 y, 221 d |
| 1990 | May 27 | A.J. Foyt | 1/16/1935 | 55 y, 132 d* | Billy Vukovich, III | 8/31/1963 | 26 y, 269 d |
| 1991 | May 26 | A.J. Foyt | 1/16/1935 | 56 y, 131 d* | Buddy Lazier (R) | 10/31/1967 | 23 y, 207 d |
| 1992 | May 24 | A.J. Foyt | 1/16/1935 | 57 y, 130 d* | Paul Tracy (R) | 12/17/1968 | 23 y, 159 d |
| 1993 | May 30 | Al Unser, Sr. | 5/29/1939 | 54 y, 1 d | Stephan Gregorie | 5/14/1969 | 24 y, 16 d |
| 1994 | May 29 | Mario Andretti | 2/28/1940 | 54 y, 90 d | Jacques Villeneuve (R) | 4/9/1971 | 23 y, 50 d |
| 1995 | May 28 | Lyn St. James | 3/13/1947 | 48 y, 76 d | Jacques Villeneuve | 4/9/1971 | 24 y, 49 d |
| 1996 | May 26 | Lyn St. James | 3/13/1947 | 49 y, 75 d | Michel Jourdain, Jr. (R) | 9/2/1976 | 19 y, 267 d |
| 1997 | May 26-27 | Lyn St. James | 3/13/1947 | 50 y, 74 d | Tony Stewart | 5/20/1971 | 26 y, 6 d |
| 1998 | May 24 | Jack Hewitt (R) | 7/8/1951 | 46 y, 320 d | J.J. Yeley | 10/5/1976 | 21 y, 231 d |
| 1999 | May 30 | Arie Luyendyk | 9/21/1953 | 45 y, 251 d | Jimmy Kite | 2/18/1976 | 23 y, 101 d |
| 2000 | May 28 | Lyn St. James | 3/13/1947 | 53 y, 78 d | Sarah Fisher (R) | 10/4/1980 | 19 y, 237 d |
| 2001 | May 27 | Arie Luyendyk | 9/21/1953 | 47 y, 248 d | Sarah Fisher | 10/4/1980 | 20 y, 235 d |
| 2002 | May 26 | Arie Luyendyk | 9/21/1953 | 48 y, 247 d | Sarah Fisher | 10/4/1980 | 21 y, 234 d |
| 2003 | May 25 | Al Unser, Jr. | 4/19/1962 | 41 y, 36 d | A.J. Foyt, IV (R) | 5/25/1984 | 19 y, 0 d* |
| 2004 | May 30 | Marty Roth (R) | 12/15/1958 | 45 y, 167 d | A.J. Foyt, IV | 5/25/1984 | 20 y, 5 d |
| 2005 | May 29 | Marty Roth | 12/15/1958 | 46 y, 166 d | A.J. Foyt, IV | 5/25/1984 | 21 y, 4 d |
| 2006 | May 28 | Eddie Cheever, Jr. | 1/10/1958; | 48 y, 138 d | Marco Andretti (R) | 3/13/1987 | 19 y, 76 d |
| 2007 | May 27 | Marty Roth | 12/15/1958 | 47 y, 164 d | Marco Andretti | 3/13/1987 | 20 y, 75 d |
| 2008 | May 25 | Marty Roth | 12/15/1958 | 48 y, 162 d | Graham Rahal (R) | 1/4/1989 | 19 y, 141 d |
| 2009 | May 24 | Davey Hamilton | 6/13/1962 | 47 y, 345 d | Graham Rahal | 1/4/1989 | 20 y, 140 d |
Bold indicates race winner that year
* Age record
# (see below)
Note that prior to 1996, the age requirement for entry was 21 years of age. In 1996, the rules were changed to be a requirement of 18 years of age.
1969-1970: Mike Mosely claimed birthday of 12/13/1945 instead of true 12/13/1946 (one year difference).
1981-1982: Josele Garza claimed birthdate of 3/15/1960, and then 3/15/1961 instead of true 3/15/1962 (two years difference); Dale Whittington (b. 9/23/1959) originally regarded as youngest driver of the 1982 race, no longer held that distinction after Garza reveiled his actual age in 1983.
The longest-ago born driver ever in the field was believed to be 1913 winner Jules Goux, who at one time was believed to be born in 1873. More reliable records indicate he was probably born 3/6/1885. The longest-ago born driver with accurate birth records is Johnny Jenkins, who raced in 1912-1913. Jenkins was born 11/11/1875.
The youngest living driver, born most recent, ever to be in the field is Graham Rahal, who was born 1/4/1989. He finished 33rd in the 2008 race after turning 19 four months before race day.