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12th Indianapolis 500
Indianapolis Motor Speedway
Indianapolis 500
Sanctioning body	AAA
Date	May 30, 1924
Winner	L. L. Corum and ; Joe Boyer (co-winners)
Winning Entrant	Duesenberg
Average speed	98.234 mph (158.092 km/h)
Pole position	Jimmy Murphy
Pole speed	108.037 mph (173.869 km/h)
Most laps led	Earl Cooper (119)
Pre-race
Pace car	Cole V8
Pace car driver	Lew Pettijohn
Starter	W. S. Gilbreath
Honorary referee	Henry Ford
Estimated attendance	135,000-140,000
Chronology
1923	1925

The 12th International 500-Mile Sweepstakes Race was held at the Indianapolis Motor Speedway on Friday, May 30, 1924.

L. L. Corum started the race in the #15 entry, and was relieved during the race by Joe Boyer. Boyer proceeded to drive the car to victory, and both drivers were credited as "co-winners" for the 1924 race.

Boyer led the first lap of the race in his original #9 entry. After Boyer got out of the car and took over the #15, the #9 entry continued in the race, taken over by Ernie Ansterburg, Corum, and later Thane Houser. Houser crashed the car after 176 laps, and Boyer's original car was credited with 18th place.

Time trials

Four-lap (10 mile) qualifying runs were utilized. Jimmy Murphy won the pole position with a speed of over 108mph.

Starting grid

Row	Inside		Middle		Outside
1	2	Jimmy Murphy W	4	Harry Hartz	5	Tommy Milton W
2	9	Joe Boyer	3	Bennett Hill	8	Earl Cooper
3	18	Jules Ellingboe	16	Cliff Durant	32	Antoine Mourre R
4	10	Ernie Ansterburg R	7	Jerry Wunderlich	21	Frank Elliott
5	12	Pete DePaolo	1	Eddie Hearne	6	Ira Vail
6	14	Fred Comer R	31	Ora Haibe	19	Bob McDonogh R
7	26	Bill Hunt R	28	Alfred Moss R	15	L. L. Corum
8	27	Fred Harder R

R Indianapolis 500 rookie

W Indianapolis 500 winner

Race summary

Co-winners L. L. Corum (left) and Joe Boyer (right)

After Joe Boyer, in his original car, led the first lap, Jimmy Murphy took the lead. By half-distance, Murphy led while Earl Cooper held 2nd. Fred Duesenberg, incensed that his lead car was behind four Miller vehicles, called Boyer into the pits, as his car had fallen behind with unscheduled pit stops. He then waved in his 5th-place car, driven by L. L. Corum, and installed Boyer in it. Duesenberg reportedly told him, "Catch them," referring to the Millers, "or burn this ship!"^[3]

Boyer re-entered the race with Corum's car and soon passed Bennett Hill and Harry Hartz. With 40 laps to go, he was about 1 mile behind leader Jimmy Murphy and Earl Cooper, turning laps at up to 104 mph.

Murphy was signaled that Boyer was rapidly closing and upped his pace, but he soon cut a tire and had to pit. Cooper assumed the lead but suffered the same fate after pushing harder. Cooper sped out of the pits and closed on Boyer. With 12 laps to go, Cooper made a passing attempt in turn 1, but skidded and again cut a tire, prompting another pit stop. Boyer then eased his pace to win the 500 with a record average speed of over 98 mph.^[4]

Box score

Finish	Start	No	Name	Entrant	Chassis	Engine	Qual	Rank	Laps	Status
1	21	15	L. L. Corum (Laps 1–111) Joe Boyer (Laps 112–200)	Duesenberg	Duesenberg	Duesenberg	93.330	16	200	Running
2	6	8	Earl Cooper	Earl Cooper	Miller	Miller	103.900	6	200	Running
3	1	2	Jimmy Murphy W	Jimmy Murphy	Miller	Miller	108.030	1	200	Running
4	2	4	Harry Hartz	R. Cliff Durant	Miller	Miller	107.130	2	200	Running
5	5	3	Bennett Hill	Harry A. Miller	Miller	Miller	104.840	5	200	Running
6	13	12	Peter DePaolo	Duesenberg Brothers	Duesenberg	Duesenberg	99.280	13	200	Running
7	16	14	Fred Comer R (Wade Morton Laps 99–120)	R. Cliff Durant	Miller	Miller	92.880	17	200	Running
8	15	6	Ira Vail (C. W. Van Ranst Laps 162–200)	Ira Vail	Miller	Miller	96.400	15	200	Running
9	9	32	Antoine Mourre R	Antoine Mourre	Miller	Miller	99.490	9	200	Running
10	18	19	Bob McDonogh R	Harry A. Miller	Miller	Miller	91.550	19	200	Running
11	7	18	Jules Ellingboe	Harry A. Miller	Miller	Miller	102.600	7	200	Running
12	11	7	Jerry Wunderlich (Wade Morton Laps 31–90) (Wade Morton Laps 158–187)	R. Cliff Durant	Miller	Miller	99.360	11	200	Running
13	8	16	Cliff Durant (Phil Shafer Laps 91–110) (Eddie Hearne)	R. Cliff Durant	Miller	Miller	101.610	8	199	Out of gas
14	19	26	Bill Hunt R	Barber-Warnock	Ford T	Fronty-Ford	85.040	21	191	Flagged
15	17	31	Ora Haibe (Elmer Dempsey Laps 101–121)	Albert Schmidt	Mercedes	Mercedes	92.810	18	182	Flagged
16	20	28	Alfred Moss R	Barber-Warnock	Ford T	Fronty-Ford	85.270	20	177	Flagged
17	22	27	Fred Harder R	Barber-Warnock	Ford T	Fronty-Ford	82.770	22	177	Flagged
18	4	9	Joe Boyer (Ernie Ansterburg Laps 93–158) (Thane Houser Laps 176)	Duesenberg Brothers	Duesenberg	Duesenberg	104.840	4	176	Crash T1
19	14	1	Eddie Hearne (Cliff Durant Laps 123–137)	R. Cliff Durant	Miller	Miller	99.230	14	151	Fuel line
20	12	21	Frank Elliott	Frank R. Elliott	Miller	Miller	99.310	12	149	Gas tank
21	3	5	Tommy Milton W	Tommy Milton	Miller	Miller	105.200	3	110	Gas tank
22	10	10	Ernie Ansterburg R	Duesenberg	Duesenberg	Duesenberg	99.400	10	2	Crash T2
^[5]^[6]

Note: Relief drivers in parentheses^[7]

W Former Indianapolis 500 winner

R Indianapolis 500 Rookie

Race statistics

Lap Leaders
Laps	Leader
1	Joe Boyer
2–41	Jimmy Murphy
42	Earl Cooper
43	Jimmy Murphy
44–105	Earl Cooper
106–120	Jimmy Murphy
121–176	Earl Cooper
177–200	Joe Boyer

Total laps led
Leader	Laps
Earl Cooper	119
Jimmy Murphy	56
Joe Boyer	25

Race details

For 1924, riding mechanics were optional,^[8] however, no teams utilized them.
First alternate: none^[9]

Eddie Hearne was the lone entry in the race who competed in the inaugural Indy 500

References

^ ^a ^b Fox, Jack C. (1994). The Illustrated History of the Indianapolis 500 1911-1994 (4th ed.). Carl Hungness Publishing. p. 22. ISBN 0-915088-05-3.
^ Patton, W. Blaine (May 31, 1924). "Boyer Relieves 'Duesie' Pilot In 106th, Finishing; Corum Officially Wins". The Indianapolis Star. p. 1. Retrieved June 3, 2017 – via Newspapers.com.
^ Book "The Indianapolis 500: A Complete Pictorial History" p. 58
^ Book "The Indianapolis 500: A Complete Pictorial History" p.58-61
^ "Indianapolis 500 1924". Ultimate Racing History. Archived from the original on 5 February 2013. Retrieved 15 January 2012.
^ Popely, Rick; Riggs, L. Spencer (1998). The Indianapolis 500 Chronicle. Lincolnwood, Illinois: Publications International, Ltd. ISBN 0-7853-2798-3.
^ "International 500 Mile Sweepstakes – May 30, 1924". ChampCarStats.com.
^ Blazier, John E.; Rollings, Tom (1994). Forgotten Heroes of the Speedways: The Riding Mechanics.
^ The Talk of Gasoline Alley - 1070-AM WIBC, May 14, 2004

Grand Prix Race
Previous race: 1923 Italian Grand Prix	1924 Grand Prix season Grandes Épreuves	Next race: 1924 French Grand Prix
Previous race: 1923 Indianapolis 500	Indianapolis 500	Next race: 1925 Indianapolis 500

1923 Indianapolis 500 Tommy Milton	1924 Indianapolis 500 L. L. Corum and Joe Boyer	1925 Indianapolis 500 Peter DePaolo
Preceded by 94.484 mph (1922 Indianapolis 500)	Record for the fastest average speed 98.234 mph	Succeeded by 101.127 mph (1925 Indianapolis 500)