1918 AAA National Championship
| 16 May | Uniontown, Pennsylvania | Board Oval |
| 16 May | Uniontown, Pennsylvania | Board Oval |
| 16 May | Uniontown, Pennsylvania | Board Oval |
| 16 May | Uniontown, Pennsylvania | Board Oval |
| 16 May | Uniontown, Pennsylvania | Board Oval |
| 04 Jul | Tacoma, Washington | Board Oval |
| 04 Jul | Tacoma, Washington | Board Oval |
| 04 Jul | Tacoma, Washington | Board Oval |
| 18 Jul | Uniontown, Pennsylvania | Board Oval |
| 28 Jul | Chicago, Illinois | Board Oval |
| 28 Jul | Chicago, Illinois | Board Oval |
| 28 Jul | Chicago, Illinois | Board Oval |
| 17 Aug | Sheepshead Bay, New York | Board Oval |
| 17 Aug | Sheepshead Bay, New York | Board Oval |
| 17 Aug | Sheepshead Bay, New York | Board Oval |
| 02 Sep | Uniontown, Pennsylvania | Board Oval |
Championship Result
Note: There was no championship this year! Haresnipe retrospectively declared Ralph Mulford champion and allotted points, but none were actually scored or declared that year.
Liberty Sweepstakes
16th May 1918 - Uniontown: 27 miles (1.125 miles x 24 laps)
FP # SP Driver Car Time
1 7 Tom Milton Duesenberg 0:15:59.52, 101.301 mph
2 9 Ralph Mulford Frontenac 0:17:51.69
3 I.P.Fetterman Peerless 0:18:21.10
4 43 Omar Toft Miller Flagged
5 George Gardner Hudson Flagged
6 45 Eddie Hearne Frontenac Flagged
7 Fred McCarthy Hudson Flagged
8 15 Barney Oldfield Miller "Golden Submarine" 21 laps/out
Liberty Sweepstakes
16th May 1918 - Uniontown: 27 miles (1.125 miles x 24 laps)
FP # SP Driver Car Time
1 9 Ralph Mulford Frontenac 0:16:37.09, 97.484 mph
2 15 Barney Oldfield Miller "Golden Submarine" 0:17:22.30
3 I.P.Fetterman Peerless 0:17:23.75
4 43 Omar Toft Miller 0:17:33.89
5 George Gardner Hudson Flagged
6 Louis Chevrolet Frontenac 15 laps/out
7 Ira Vail Hudson 5 laps/out
8 45 Eddie Hearne Frontenac 1 laps/out
Liberty Sweepstakes
16th May 1918 - Uniontown: 27 miles (1.125 miles x 24 laps)
FP # SP Driver Car Time
1 45 Eddie Hearne Frontenac 0:16:49.64, 96.272 mph
2 Fred McCarthy Hudson 0:17:51.73
3 43 Omar Toft Miller 0:17:52.13
4 George Gardner Hudson Flagged
5 I.P.Fetterman Peerless 14 laps/out
6 Ira Vail Hudson 14 laps/out
7 15 Barney Oldfield Miller "Golden Submarine" 2 laps/out
Liberty Sweepstakes
16th May 1918 - Uniontown: 27 miles (1.125 miles x 24 laps)
FP # SP Driver Car Time
1 Louis Chevrolet Frontenac 0:17:03.68, 94.952 mph
2 Fred McCarthy Hudson 0:17:40.82
3 George Gardner Hudson 0:18:29.75
4 H.L.Robinson Duesenberg Flagged
5 43 Omar Toft Miller 16 laps/out
6 15 Barney Oldfield Miller "Golden Submarine" 6 laps/out
Liberty Sweepstakes
16th May 1918 - Uniontown: 27 miles (1.125 miles x 24 laps)
FP # SP Driver Car Time
1 9 Ralph Mulford Frontenac 0:16:42.82, 96.927 mph
2 45 Eddie Hearne Frontenac 0:16:58.77
3 7 Tom Milton Duesenberg 0:17:35.18
4 Louis Chevrolet Frontenac 18 laps/out
4th July 1918 - Tacoma: 24 miles (2.0 miles x 12 laps)
FP # SP Driver Car Time
1 1 Cliff Durant Chevrolet 0:15:09.4, 98.96 mph
2 Dave Lewis Duesenberg 0:15:28.0
3 Eddie Hearne Duesenberg 0:15:30.0
4 Eddie Pullen Mercer 0:15:32.2
5 8 Earl Cooper Stutz 0:17:43.0
4th July 1918 - Tacoma: 50 miles (2.0 miles x 25 laps)
FP # SP Driver Car Time
1 1 Cliff Durant Chevrolet 0:30:37.6, 97.95 mph
2 Dave Lewis Duesenberg 0:31:35.8
3 Eddie Hearne Duesenberg 0:31:38.6
4 8 Earl Cooper Stutz 0:31:40.0
5 Eddie Pullen Mercer 2 laps/out
4th July 1918 - Tacoma: 75 miles (2.0 miles x 37.5 laps)
FP # SP Driver Car Time
1 Eddie Hearne Duesenberg 0:47:43.5, 94.29 mph
2 1 Cliff Durant Chevrolet 0:47:58.0
3 8 Earl Cooper Stutz 0:48:50.0
4 Eddie Pullen Mercer 0:49:30.0
5 Dave Lewis Duesenberg 34 laps/flagged
Race probably started (or finished) on the back stretch.
Independence Auto Derby
18th July 1918 - Uniontown: 112.5 miles (1.125 miles x 100 laps)
FP # SP Driver Car Time
1 Louis Chevrolet Frontenac 1:11:22.45, 94.572 mph
2 Omar Toft Miller 1:12:37.78
3 Eddie Hearne Duesenberg 1:13:08.67
4 Ralph Mulford Frontenac 1:15:16.37
5 Tom Milton Duesenberg 1:19:16.66
6 Barney Oldfield Miller "Golden Submarine" 96 laps/flagged
7 DeLloyd Thompson Duesenberg Flagged
8 Denny Hickey Hudson 81 laps/engine
9 Arthur Duray Frontenac 67 laps/timing gear
10 George Gardner Hudson 0 laps/accident on pace lap
11 Fred McCarthy C&B 0 laps/flagged
NS Joe Boyer
NS I.P.Fetterman
NS Ben Schoaff
NS Milton McBride
28th July 1918 - Chicago Speedway: 10 miles (2.0 miles x 5 laps)
FP # SP Driver Car Time
1 Ralph DePalma Packard 0:05:24.8, 110.84 mph
2 Louis Chevrolet Frontenac 0:05:25.0
3 Dario Resta Resta Special 0:05:26.0
4 Ralph Mulford Frontenac 0:05:26.2
The scheduled 50 mile race was rained off.
28th July 1918 - Chicago Speedway: 20 miles (2.0 miles x 10 laps)
FP # SP Driver Car Time
1 4 Ralph DePalma Packard 0:10:50.2, 110.73 mph
2 1 Dario Resta Peugeot 0:10:51.6
3 9 Ralph Mulford Frontenac 0:10:52.0
4 3 Louis Chevrolet Frontenac 0:10:52.2
5 14 Ira Vail Hudson Out
28th July 1918 - Chicago Speedway: 30 miles (2.0 miles x 15 laps)
FP # SP Driver Car Time
1 4 Ralph DePalma Packard 0:16:54.8, 106.42 mph
2 3 Louis Chevrolet Frontenac 0:16:55.8
3 1 Dario Resta Peugeot con-rod
4 9 Ralph Mulford Frontenac oil line
5 14 Ira Vail Hudson
NS 2 Arthur Duray Frontenac
17th August 1918 - Sheepshead Bay: 20 miles (2.00 miles x 10 laps)
FP # SP Driver Car Time
1 Ralph DePalma Packard 0:10:51.6, 110.50 mph
2 Dario Resta Peugeot 10 laps/finished
3 Ralph Mulford Frontenac 10 laps/finished
4 Louis Chevrolet Frontenac 3 laps/engine trouble
NS Arthur Duray Frontenac car driven by Chevrolet
NS Tommy Milton mechanical
17th August 1918 - Sheepshead Bay: 30 miles (2.00 miles x 15 laps)
FP # SP Driver Car Time
1 Ralph DePalma Packard 0:16:31.2, 108.96 mph
2 Ralph Mulford Frontenac 15 laps/finished
3 Dario Resta Peugeot 15 laps/finished
4 Ira Vail Hudson 11 laps/flagged
NS Tommy Milton mechanical
Lap Leaders: Ralph Mulford laps 1-4, 7-9
Ralph DePalma laps 5-6, 10-15
Lap leaders estimated.
17th August 1918 - Sheepshead Bay: 50 miles (2.00 miles x 25 laps)
FP # SP Driver Car Time
1 Ralph DePalma Packard 0:27:29.2, 109.14 mph
2 Dario Resta Peugeot 0:27:32.0
3 Ralph Mulford Frontenac 25 laps/finished
4 Ira Vail Hudson 25 laps/finished
NS Tommy Milton mechanical
Lap Leaders: Ralph Mulford laps 1-2, 4-9, 13-24
Dario Resta laps 3
Ralph DePalma laps 10-12, 25
Lap leaders estimated.
2nd September 1918 - Uniontown: 112.5 miles (1.125 miles x 100 laps)
FP # SP Driver Car Time
1 Ralph Mulford Frontenac 1:10:11.17, 96.173 mph
2 Louis Chevrolet Frontenac 1:12:10.42
3 Omar Toft Miller 1:12:11.62
4 Arthur Duray Frontenac 1:15:45.57
5 I.P.Fetterman Peerless 1:16:58.13
6 Tom Milton Duesenberg 1:18:21.72
7 DeLloyd Thompson Duesenberg 59 laps/engine
8 Eddie Hearne Duesenberg 49 laps/engine
9 Denny Hickey Hudson 19 laps/accident
10 Fred McCarthy C&B Out
11 William Muller Duesenberg Out