| Indianapolis Motor Speedway | |||||
|---|---|---|---|---|---|
| Indianapolis 500 | |||||
| Sanctioning body | AAA | ||||
| Date | May 30, 1923 | ||||
| Winner | Tommy Milton | ||||
| Winning Entrant | H.C.S. Motor Car Company | ||||
| Average speed | 90.954 mph (146.376 km/h) | ||||
| Pole position | Tommy Milton | ||||
| Pole speed | 108.170 mph (174.083 km/h) | ||||
| Most laps led | Tommy Milton (128) | ||||
| Pre-race | |||||
| Pace car | Duesenberg | ||||
| Pace car driver | Fred Duesenberg | ||||
| Starter | Eddie Rickenbacker[1] | ||||
| Honorary referee | John Oliver La Gorce[1] | ||||
| Estimated attendance | 150,000[2] | ||||
| Chronology | |||||
| |||||

The11th International 500-Mile Sweepstakes Race was held at theIndianapolis Motor Speedway on Wednesday, May 30, 1923. After winning previously in1921,Tommy Milton became the first multiple winner of theIndianapolis 500.Howdy Wilcox (the1919 winner) drove relief for Milton in laps 103–151. During the break, Milton had to have his hands bandaged due to blisters, and changed his shoes due to crimping of his toes.[3]
On lap 22,Tom Alley (drivingEarl Cooper's entry) wrecked on the backstretch, going through the wall, andkilled 16-year-old spectator Bert Shoup. Alley and two other spectators were injured.[4]
In January 1923, about four months before the race, theIndiana Legislature passed a bill prohibiting commercialized sporting events, including the Indianapolis 500, from being held onMemorial Day.[5] At the time, Memorial Day was a fixed-date holiday (May 30). Some veterans groups, and proponents of the measure, led by senator Robert L. Moorhead, were displeased with the way the holiday had become "...a day for games, races, and revelry, instead of a day of memory and tears".[6] The bill sparked a heated debate, whereby the localAmerican Legion issued a public proclamation opposing the law, on the grounds of free expression, and being "un-American" in principle.[7]
The issue created a potential schedule shake-up, which could have moved the race to the proceeding Saturday (May 26), or forced an outright cancellation.[8][9] Speedway management was leery about permanently moving the race to a Saturday, since many spectators worked on Saturdays, and they preferred to have the race on a holiday. Racing on Sunday was alsostrongly opposed by management at the time. Officials in the city of Indianapolis even proposed making the Saturday before Memorial Day a city holiday, to ensure the race was held on a holiday. On March 5, after consulting legal experts,GovernorWarren T. McCray vetoed the bill, calling it "class legislation" and thereforeunconstitutional.[10]
In subsequent years, the Indianapolis 500 would be held on Memorial Day (May 30) regardless of the day of the week through1970. The only exceptions were when May 30 fell on a Sunday. In those cases, the race was held on Monday May 31 (the observed holiday). Memorial Day ceased to be a fixed-date holiday after the passage of theUniform Monday Holiday Act, which took effect in 1971. The race moved permanently to Sunday starting in1974.

Four-lap (10 mile) qualifying runs were utilized.Tommy Milton won the pole with a record speed of over 108 mph. Five cars qualified with average speeds of over 100 mph.
| Row | Inside | Middle | Outside | |||
|---|---|---|---|---|---|---|
| 1 | 1 | 7 | 3 | |||
| 2 | 21 | 27 | 18 | |||
| 3 | 23 | 25 | 5 | |||
| 4 | 8 | 2 | 29 | |||
| 5 | 4 | 6 | 16 | |||
| 6 | 31 | 14 | 35 | |||
| 7 | 26 | 15 | 28 | |||
| 8 | 19 | 22 | 34 | |||
Note: Relief drivers in parentheses[15]
W Former Indianapolis 500 winner
R Indianapolis 500 Rookie
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| Grand Prix Race | ||
|---|---|---|
| Previous race: 1922 Italian Grand Prix | 1923 Grand Prix season Grandes Épreuves | Next race: 1923 French Grand Prix |
| Previous race: 1922 Indianapolis 500 | Indianapolis 500 | Next race: 1924 Indianapolis 500 |