| 15.5.1955 | Preliminary Cumberland [Ladies] | 24 | TC | Suzy Dietrich | S. Dietrich | 1st |
| 15.5.1955 | Preliminary Cumberland [Ladies] | 101 | TD | Marilyn Steele | Max-Marilyn Steele | 7th |
| 15.5.1955 | Preliminary Cumberland [Ladies] | 115 | TF | Barbara Goodman | B. J. Goodmann | DNA |
| 15.5.1955 | Preliminary Cumberland [Ladies] | 138 | TD | Mrs. B. Skitarelic | Dr. B. Skitarelic | DNA |
| 15.5.1955 | Preliminary Cumberland [Ladies] | 155 | TF 1500 | Rebecca Spitler | Bernard Luct | 11th |
| 15.5.1955 | Preliminary Cumberland [Novice 2.0] | 178 | TC | D. C. Jones | D. C. Jones | DNA |
| 15.5.1955 | Preliminary Cumberland [Novice 2.0] | 179 | TC | P. L. Bragg | F. J. Hannig | 24th |
| 15.5.1955 | Preliminary Cumberland [Ladies] | 202 | TD | Barbara Yost | H. A. Logan, Jr. | 12th |
| 15.5.1955 | Preliminary Cumberland [Novice 2.0] | 219 | | James Diaz | B. Diaz | DNA |
| 15.5.1955 | Preliminary Cumberland [Novice 2.0] | 249 | | Ken Wanamaker | K. C. Wanamaker | 12th |
| 15.5.1955 | Preliminary Cumberland [Novice 2.0] | 273 | TC | William Jennings Bryan | Wm. Jennings Bryan | DNA |
| 22.5.1955 | Marlboro [S2.0] | 29 | TD | Robert Lautz | | raced |
| 22.5.1955 | Marlboro [S2.0] | 70 | | Elmer Archibald | | ?th |
| 22.5.1955 | Marlboro [Novice 1.3] | 70 | | Elmer Archibald | | ?th |
| 22.5.1955 | Marlboro [Modified] | | TD | | | raced |
| 22.5.1955 | Marlboro [S2.0] | | TC | Frank Baptista | | raced |
| 22.5.1955 | Marlboro [S2.0] | | TF | William Long | Scuderia Shadetree | ?th |
| 22.5.1955 | Marlboro [Modified] | | | | | raced |
| 22.5.1955 | Marlboro [Novice 1.5] | | TD | Robert Lautz | | raced |
| 22.5.1955 | Marlboro [S2.0] | | TF 1500 | Stephen Spitler | | ?th |
| 22.5.1955 | Marlboro [S2.0] | | TF 1500 | Ralph Russell | | ?th |
| 22.5.1955 | Marlboro [Modified] | | | | | raced |
| 22.5.1955 | Marlboro [FP] | | TF 1500 | Dick Nash | | raced |
| 22.5.1955 | Marlboro [Novice 1.5] | | TF 1500 | Thomas Fitzsimmons | Tom Fitzsimmons | raced |
| 22.5.1955 | Marlboro [FP] | | TF 1500 | Stephen Spitler | | 1st |
| 22.5.1955 | Marlboro [GP] | | TF | William Long | Scuderia Shadetree | 1st |
| 22.5.1955 | Marlboro [FP] | | TF 1500 | Nick Ryder | | 2nd |
| 22.5.1955 | Marlboro [FP] | | TF 1500 | Foxy Carter | | 3rd |
| 22.5.1955 | Marlboro [GP] | | TC | Frank Baptista | | 2nd |
| 29.5.1955 | SCCA Regional Thompson [MG] | 3 | TF | Bob Holbert | | 4th |
| 29.5.1955 | SCCA Regional Thompson [MG] | 5 | TD | Bill Schade | | 3rd |
| 29.5.1955 | SCCA Regional Thompson [MG] | 6 | TC | Sidney Miller | | 2nd |
| 29.5.1955 | SCCA Regional Thompson [MG] | 8 | TD | Gale Arnold | | 17th |
| 29.5.1955 | SCCA Regional Thompson [MG] | 9 | | Campanaro | | 15th |
| 29.5.1955 | SCCA Regional Thompson [MG] | 12 | | Bearns | | 7th |
| 29.5.1955 | SCCA Regional Thompson [MG] | 14 | TD | Don Quackenbush | | 11th |
| 29.5.1955 | SCCA Regional Thompson [MG] | 16 | | A. Drummond | | 14th |
| 29.5.1955 | SCCA Regional Thompson [MG] | 18 | TD | Ray Henley | | 8th |
| 29.5.1955 | SCCA Regional Thompson [MG] | 20 | TC | H. Pitt Kinsolving | | 10th |
| 29.5.1955 | SCCA Regional Thompson [MG] | 22 | TD | Len Bastrup | | 6th |
| 29.5.1955 | SCCA Regional Thompson [MG] | 23 | TC | George Valentine | | 1st |
| 29.5.1955 | SCCA Regional Thompson [MG] | 24 | | C. Scott | | 16th |
| 29.5.1955 | SCCA Regional Thompson [MG] | 25 | | Mead | | 9th |
| 29.5.1955 | SCCA Regional Thompson [MG] | 27 | TD Mk II | Gus Ehrman | | 5th |
| 29.5.1955 | SCCA Regional Thompson [MG] | 28 | TD | McGowan | | 13th |
| 29.5.1955 | SCCA Regional Thompson [FP] | 30 | TF 1500 | Goodwin Stoddard | | 8th |
| 29.5.1955 | SCCA Regional Thompson [MG] | 39 | TF | Sach Masumoto | | 12th |
| 29.5.1955 | Santa Barbara [S1.5] | 50 | Special R2 | Ken Miles | Ken Miles | 1st |
| 29.5.1955 | BRSCC Brands Hatch [S1.5] | 56 | TD | Bill Constable | | 6th |
| 29.5.1955 | SCCA Regional Thompson [FM+CP] | 117 | Special | Guy Atkins | | 9th |
| 29.5.1955 | SCCA Regional Thompson [FP] | 154 | TF 1500 | Colin Wheeler | | 12th |
| 29.5.1955 | Santa Barbara [S+1.5] | 155 | TC | Harold Erb | | ?th |
| 29.5.1955 | Santa Barbara [S1.5] | | Special R1 | Cy Yedor | | 2nd |
| 29.5.1955 | Santa Barbara [S1.5] | | TC Special | Bob Menefee | | 4th |
| 29.5.1955 | Santa Barbara [S1.5] | | TF 1500 | Parkinson | | ?th |
| 29.5.1955 | Santa Barbara [S+1.5] | | Special R1 | Cy Yedor | | ?th |
| 29.5.1955 | Santa Barbara [Ladies] | | TF | Ruth Doushkess | | ?th |
| 29.5.1955 | Santa Barbara [Ladies] | | TF | Mary Davis | | ?th |
| 29.5.1955 | Santa Barbara [Ladies] | | TD | Diane Newton | | ?th |
| 29.5.1955 | Consolation Santa Barbara [S1.5] | | Special | Ralph Phillips | | 3rd |
| 29.5.1955 | Consolation Santa Barbara [S1.5] | | Special | Jack Dalton | | 4th |
| 30.5.1955 | Iowa [FM+GM+FM+FP+GP] | 16 | TD | Budd Blume | Bud Blume | DNF |
| 30.5.1955 | Iowa [GM+HM+FP+GP] | 16 | TD | Budd Blume | Bud Blume | DNA |
| 30.5.1955 | Iowa [FM+GM+FM+FP+GP] | 19 | TD Mk II | Roy Heath | Roy Heath | raced |
| 30.5.1955 | Iowa [FM+GM+FM+FP+GP] | 24 | TD | Joe Mayer | Joe Mayer | DNA |
| 30.5.1955 | Iowa [GM+HM+FP+GP] | 24 | TD | Joe Mayer | Joe Mayer | DNA |
| 30.5.1955 | Iowa [EM+FM+CP+DP+EP] | 25 | TD | Sandy Downs | Sandy Downs | DNA |
| 30.5.1955 | Iowa [Ladies] | 30 | | Dorothy Baker | Jack Baker | DNA |
| 30.5.1955 | Iowa [FM+GM+FM+FP+GP] | 31 | TD | Wally Ingram | Wally Ingram | DNA |
| 30.5.1955 | Iowa [GM+HM+FP+GP] | 31 | TD | Wally Ingram | Wally Ingram | DNA |
| 30.5.1955 | National Davidstow [S1.3] | 36 | TD | P. Carder | | raced |
| 30.5.1955 | Iowa [GM+HM+FP+GP] | 38 | TD | Walter McCray | Walt McCray | DNA |
| 30.5.1955 | Iowa [Novice 1.5] | 38 | TD | Walter McCray | Walt McCray | DNA |
| 30.5.1955 | Iowa [GM+HM+FP+GP] | 44 | TF | Norm Patton | Norman Patton | 9th |
| 30.5.1955 | Iowa [FM+GM+FM+FP+GP] | 44 | TF | Norm Patton | Norman Patton | raced |
| 30.5.1955 | Iowa [Novice 1.5] | 49 | TD | Charles Torongo | Charles Torongo, Jr. | DNA |
| 30.5.1955 | Iowa [Novice 1.5] | 58 | TD | Wilma Boone | Wilma Boone | DNA |
| 30.5.1955 | Iowa [Ladies] | 58 | TD | Wilma Boone | Wilma Boone | DNA |
| 30.5.1955 | Iowa [GM+HM+FP+GP] | 58 | TD | Wilma Boone | Wilma Boone | DNA |
| 30.5.1955 | Iowa [EM+FM+CP+DP+EP] | 60 | TD | Duane Beane | Duane Beane | DNA |
| 30.5.1955 | Iowa [Novice 1.5] | 60 | TD | Duane Beane | Duane Beane | DNA |
| 30.5.1955 | Iowa [GM+HM+FP+GP] | 62 | TD | Bill Wuesthoff | William Wuesthoff | DNA |
| 30.5.1955 | Iowa [FM+GM+FM+FP+GP] | 62 | TD | Bill Wuesthoff | William Wuesthoff | raced |
| 30.5.1955 | Iowa [Novice 1.5] | 62 | TD | Bill Wuesthoff | William Wuesthoff | DNA |
| 30.5.1955 | Iowa [FM+GM+FM+FP+GP] | 74 | TD | Keith Thomson | Keith Thomson | DNA |
| 30.5.1955 | Iowa [GM+HM+FP+GP] | 74 | TD | Keith Thomson | Keith Thomson | DNA |
| 30.5.1955 | Iowa [Novice 1.5] | 74 | TD | Keith Thomson | Keith Thomson | DNA |
| 30.5.1955 | Iowa [GM+HM+FP+GP] | 88 | TD | Bob Cole | Robert Cole | DNA |
| 30.5.1955 | Iowa [FM+GM+FM+FP+GP] | 88 | TD | Bob Cole | Robert Cole | DNA |
| 30.5.1955 | Iowa [FM+GM+FM+FP+GP] | 106 | TD | Howard Peters | Howard Peters | DNA |
| 30.5.1955 | Iowa [Novice 1.5] | 106 | TD | Howard Peters | Howard Peters | DNA |
| 30.5.1955 | Iowa [GM+HM+FP+GP] | 106 | TD | Howard Peters | Howard Peters | DNA |
| 30.5.1955 | Iowa [EM+FM+CP+DP+EP] | 107 | TD Special | Frank Meiners | Frank Meiners | DNA |
| 30.5.1955 | Iowa [FM+GM+FM+FP+GP] | 110 | TD | John Goans | John Goans, Jr. | DNA |
| 30.5.1955 | Iowa [GM+HM+FP+GP] | 110 | TD | John Goans | John Goans, Jr. | DNA |
| 30.5.1955 | Iowa [GM+HM+FP+GP] | 111 | TD | George Tipsword | George Tipsword | DNA |
| 30.5.1955 | Iowa [FM+GM+FM+FP+GP] | 111 | TD | George Tipsword | George Tipsword | DNA |
| 30.5.1955 | Iowa [GM+HM+FP+GP] | 116 | TD | Lew Welge | Lew Welge | DNA |
| 30.5.1955 | Iowa [FM+GM+FM+FP+GP] | 116 | TD | Lew Welge | Lew Welge | DNA |
| 30.5.1955 | Iowa [FM+GM+FM+FP+GP] | | TD | Ben Harris | Pat Smith | DNF |