| 11.5.1958 | Hawaii [S+1.6] | 8 | Special V8-60 | Gordon Hill | George Reeves | 22nd |
| 11.5.1958 | Hawaii [S1.6] | 8A | Special | Gordon Hill | George Reeves | 18th |
| 11.5.1958 | SCCA Regional Tracy [Production Group A] | 31 | A | Ed La Mantia | Ed La Mantia | DNA |
| 11.5.1958 | SCCA Regional Tracy [FM+GM+HM] | 37 | Simca Special | Stan Peterson | Stan Peterson | DNA |
| 11.5.1958 | Hawaii [S1.6] | 53 | A | John Hoogs | John Hoogs | 17th |
| 11.5.1958 | Hawaii [S1.6] | 59 | Special | Edith White | Edith White | DNA |
| 11.5.1958 | Hawaii [S1.6] | 59A | Special | Harry DeCastro | Harry DeCastro | 7th |
| 11.5.1958 | SCCA Regional Tracy [Production Group A] | 75 | A | Dan-San Abbott | Dan San Abbott | DNA |
| 11.5.1958 | Targa Florio | 78 | A | Alfredo Fondi | | DNA |
| 11.5.1958 | SCCA Regional Tracy [Production Group A] | 81 | A | John Jordan | John L. Jordan | 11th |
| 11.5.1958 | SCCA Regional Tracy [Production Group A] | 84 | A | Ed Leslie | Ed Leslie | 7th |
| 11.5.1958 | SCCA Regional Tracy [CM+DM+EM] | 89 | Special R2 | Jack Duncan | Jack Duncan | DNA |
| 11.5.1958 | Hawaii [S1.6] | 101 | A | Jack Garner | Jack Garner | 12th |
| 11.5.1958 | SCCA Regional Tracy [MG+Ladies+Sedan+FIII] | 110 | TC | Bob Winkelmann | Bob Winkelmann | DNA |
| 11.5.1958 | SCCA Regional Tracy [Production Group A] | 110 | TC | Bob Winkelmann | Bob Winkelmann | DNA |
| 11.5.1958 | Hawaii [S1.6] | 118 | A | Wallace Whitcomb | Wallace Whitcomb | 16th |
| 11.5.1958 | SCCA Regional Tracy [FM+GM+HM] | 149 | Special | Jerry Lewis | Jerry Lewis | DNA |
| 11.5.1958 | SCCA Regional Tracy [Production Group A] | 151 | A | Leonard Gordon | | 9th |
| 11.5.1958 | SCCA Regional Tracy [FM+GM+HM] | 158 | A | Dennis Riley | Dennis Riley | 10th |
| 11.5.1958 | SCCA Regional Tracy [CM+DM+EM] | 189 | TD | Malcolm Shroyer | Malcolm C. Shroyer | 11th |
| 15.5.1958 | Aspern [GT1.6] | 67 | A | Peter Hammerschmidt | P. Hammerschmidt | raced |
| 15.5.1958 | Aspern [GT1.6] | 72 | A | Robert Kranz | Robert Kranz | DNA |
| 18.5.1958 | GP Spa [GT2.0] | 28 | A | Romain | | ?th |
| 18.5.1958 | SCCA National Cumberland [FP] | 44 | A | Duncan Black | Duncan Black | DNA |
| 18.5.1958 | SCCA National Cumberland [FP] | 67 | A | Fred Reynolds | Fred Reynolds | DNA |
| 18.5.1958 | SCCA National Cumberland [FP] | 68 | A | J. Robb Wilson | J. Robb Wilson | DNA |
| 18.5.1958 | SCCA National Cumberland [GP+HP] | 71 | TC | Charles Henry | Charles A. Henry | raced |
| 18.5.1958 | SCCA National Cumberland [FP] | 79 | A | Phil Forsyth | Philip Forsyth | DNA |
| 18.5.1958 | Preliminary Cumberland [Ladies] | 79 | A | Forsyth | Philip Forsyth | DNA |
| 18.5.1958 | SCCA National Cumberland [GP+HP] | 85 | TD | Morrow Decker | Dor S. M. Decker, Jr. | raced |
| 18.5.1958 | SCCA National Cumberland [FP] | 92 | A | Edward A. Patterson | Edward A. Patterson | DNA |
| 18.5.1958 | SCCA National Cumberland [GP+HP] | 97 | TF | John Tame | John S. Tame | DNA |
| 18.5.1958 | SCCA National Cumberland [FP] | 107 | A | Ben Fowke | Benj. G. S. Fowke, Jr. | DNA |
| 18.5.1958 | SCCA National Cumberland [FP] | 109 | A | Walt Hoover | Walter R. Hoover | DNA |
| 18.5.1958 | SCCA National Cumberland [FP] | 114 | A | Huntley Perry | Huntley H. Perry | DNA |
| 18.5.1958 | SCCA National Cumberland [FP] | 121 | A | Homer Dasey | Homer H. Dasey | DNA |
| 18.5.1958 | Preliminary Cumberland [Ladies] | 121 | A | Laura Dasey | Homer H. Dasey | DNA |
| 18.5.1958 | Preliminary Cumberland [Ladies] | 126 | A | Joyce Botkin | Robert F. Botkin, MD. | DNA |
| 18.5.1958 | SCCA National Cumberland [EM+FM] | 139 | A | Roger Walker | Roger B. Walker | DNA |
| 18.5.1958 | SCCA National Cumberland [GP+HP] | 142 | TF | Al Weaver | Al Weaver | DNA |
| 18.5.1958 | SCCA National Cumberland [FP] | 147 | A | Archie Meihls | Archie Meihls | DNA |
| 18.5.1958 | SCCA National Cumberland [FP] | 158 | A | David Muir | L. E. Robinson | DNA |
| 18.5.1958 | SCCA National Cumberland [FP] | 174 | A | Gene Parsons | George Eugene Parsons | DNA |
| 18.5.1958 | LISCA Lime Rock [FP] | | A | Paul Romano | | ?th |
| 18.5.1958 | LISCA Lime Rock [FP] | | A | Henry Van Deusen | | ?th |
| 18.5.1958 | LISCA Lime Rock [FP] | | A | Sherman Decker | | ?th |
| 18.5.1958 | LISCA Lime Rock [GP] | | TD | Arch McNeill | | ?th |
| 18.5.1958 | LISCA Lime Rock [GP] | | TC | Bob Muncie | | ?th |
| 18.5.1958 | LISCA Lime Rock [GP] | | TC | Charles Callanan | | ?th |
| 24.5.1958 | BRSCC Full Sutton [PS] | 51 | | Harry Ratcliffe | | 14th |
| 24.5.1958 | BRSCC Full Sutton [PS] | 55 | A | T. L. A. Burgess | | 8th |
| 24.5.1958 | BRSCC Full Sutton [PS] | 57 | A | J. H. V. Cross | | 6th |
| 24.5.1958 | BRSCC Full Sutton [PS] | 59 | A | K. Wilson | | 12th |
| 25.5.1958 | GP des Frontières [GT2.0+TS1.0] | | A | Romain | | 4th |
| 25.5.1958 | Hourglass Field [Novice] | | Special | Don Shattuck | | 1st |
| 25.5.1958 | Hourglass Field [Ladies] | | TD | Bonnie Bosley | | 3rd |
| 25.5.1958 | Hourglass Field [Ladies] | | A | Barb Nieland | | 2nd |
| 26.5.1958 | Autosport Mallory Park [PS1.6] | 32 | A | Bill Beedie | Ecurie Midge Racing Team | DNA |
| 26.5.1958 | Autosport Mallory Park [PS1.6] | 36 | A | Ken Mackenzie | Ecurie Chiltern | DNA |
| 26.5.1958 | Autosport Mallory Park [PS1.6] | 37 | A | Chris Tooley | C. P. Tooley | DNA |
| 26.5.1958 | Autosport Mallory Park [PS1.6] | 38 | A | Bob Vincent | R. Vincent | DNA |
| 26.5.1958 | NSCC Mallory Park [S1.5] | 39 | A | David Dixon | Ecurie Chiltern | DNA |
| 26.5.1958 | Autosport Mallory Park [PS1.6] | 39 | A | David Dixon | Ecurie Chiltern | DNA |
| 26.5.1958 | Autosport Mallory Park [PS1.6] | 40 | A | Tommy Entwistle | T. Entwistle | DNA |
| 26.5.1958 | Autosport Mallory Park [PS1.6] | 42 | A | D. J. Hayles | Ecurie Chiltern | DNA |
| 26.5.1958 | Autosport Mallory Park [PS1.6] | 68 | A | J. A. P. Trafford | J. A. P. Trafford | DNA |
| 31.5.1958 | Preliminary Santa Barbara [GP+HP] | 0 | TF | Jim Honeter | Jim Honeter | DNA |
| 31.5.1958 | Preliminary Santa Barbara [FP] | 00 | A | Loyal Davies | Loyal Davies | DNA |
| 31.5.1958 | Preliminary Santa Barbara [FP] | 1 | A | John Free | A. M. Walker | DNA |
| 31.5.1958 | Preliminary Santa Barbara [GP+HP] | 3 | TD | Cliff Hansley | Cliff Hansley | DNA |
| 31.5.1958 | Preliminary Santa Barbara [FP] | 4 | A | Mark Sanders | Mark Sanders | DNA |
| 31.5.1958 | Novice Dunkirk [FP+GP+IP+KP] | 13 | A | Felix Christiano | | 4th |
| 31.5.1958 | Novice Dunkirk [FP+GP+IP+KP] | 24 | A | Johnny Boyd | | DNA |
| 31.5.1958 | Preliminary Santa Barbara [Ladies] | 25 | A | Dot Chaffee | Jim Chaffee | DNA |
| 31.5.1958 | Novice Dunkirk [FP+GP+IP+KP] | 31 | A | Richard Soulsby | | 5th |
| 31.5.1958 | Novice Dunkirk [FP+GP+IP+KP] | 33 | TC | Warren Bush | | 10th |
| 31.5.1958 | Novice Dunkirk [FP+GP+IP+KP] | 34 | TD | John Voss | | 13th |
| 31.5.1958 | Novice Dunkirk [FP+GP+IP+KP] | 35 | A | Art Smith | | 2nd |
| 31.5.1958 | Novice Dunkirk [FP+GP+IP+KP] | 52 | A | William Block | | 20th |
| 31.5.1958 | Novice Dunkirk [FP+GP+IP+KP] | 54 | A | Richard A. Smith | | 3rd |
| 31.5.1958 | Novice Dunkirk [FP+GP+IP+KP] | 56 | A | Dudley Deimel | | 1st |
| 31.5.1958 | Novice Dunkirk [FP+GP+IP+KP] | 60 | TC | Eric O. Pettit | | 12th |
| 31.5.1958 | Novice Dunkirk [FP+GP+IP+KP] | 74 | A | Richard Kinsey | | 7th |
| 31.5.1958 | Novice Dunkirk [FP+GP+IP+KP] | 84 | A | Jack Terhaar | | 6th |
| 31.5.1958 | Novice Dunkirk [FP+GP+IP+KP] | 90 | TC | D. Stewart | | 16th |
| 31.5.1958 | LASC Green Acres [S/GT1.6] | 90 | A Coupe | | | raced |
| 31.5.1958 | Novice Dunkirk [FP+GP+IP+KP] | 91 | TD | E. H. Clapham | | 11th |
| 31.5.1958 | Novice Dunkirk [FP+GP+IP+KP] | 100 | A | John McFarland | | 8th |
| 31.5.1958 | Preliminary Santa Barbara [Ladies] | 108 | TF 1500 | Ann Moore | Gary Moore | DNA |
| 31.5.1958 | Preliminary Santa Barbara [Novice] | 153 | TD | Art White | Art White | 32nd |
| 31.5.1958 | Preliminary Santa Barbara [Ladies] | 155 | TC | Janet Tremaine | Carl Seidlitz | DNA |
| 31.5.1958 | Novice Dunkirk [FP+GP+IP+KP] | 214 | A | Stuart Northrup | | 9th |
| 31.5.1958 | Preliminary Santa Barbara [Ladies] | 237 | TD Mk II | Norah Taylor | Sam Taylor | DNA |
| 31.5.1958 | LASC Green Acres [S/GT1.6] | | A | Gord Brown | | ?th |
| 31.5.1958 | LASC Green Acres [S/GT1.6] | | A | Ian Grant | | 3rd |
| 31.5.1958 | ICNSCC Deer Park [Production 1.5] | | A | Don Rushlight | | 2nd |
| 31.5.1958 | LASC Green Acres [MG] | | A | Jack Broad | | 2nd |
| 31.5.1958 | LASC Green Acres [MG] | | A | Ian Grant | | 1st |
| 31.5.1958 | LASC Green Acres [S/GT1.6] | | A | Kent Harris | | raced |
| 31.5.1958 | LASC Green Acres [MG] | | A | Edward Russell | | 3rd |