| 6.7.1958 | SCCA Regional Vaca Valley [FP+GP+HP] | 8 | Giulietta Spider Veloce | Ron Hathaway | Ron Hathaway | 9th |
| 6.7.1958 | SCCA Regional Vaca Valley [FP+GP+HP] | 38 | Giulietta Spider Veloce | Marion Lowe | Marion Lowe | 17th |
| 6.7.1958 | Preliminary Vaca Valley [Ladies+Sedan+FIII+MG-T] | 38 | Giulietta Spider Veloce | Marion Lowe | Marion Lowe | 2nd |
| 6.7.1958 | SCCA Regional Vaca Valley [FP+GP+HP] | 41 | Giulietta Veloce | Ed Crooks | Ed Crooks | 10th |
| 6.7.1958 | SCCA Regional Vaca Valley [FP+GP+HP] | 114 | Giulietta | Bob Lyons | Bob Lyons | DNA |
| 6.7.1958 | SCCA Regional Vaca Valley [FP+GP+HP] | 148 | Giulietta Veloce | Steve Froines | Steve Froines | 22nd |
| 6.7.1958 | SCCA Regional Vaca Valley [FP+GP+HP] | 166 | Giulietta Veloce | Willam Cook | Willam Cook | DNA |
| 12.7.1958 | Preliminary Traverse City [Novice 1.5] | | Giulietta Veloce | Bill Tuttle | | 2nd |
| 13.7.1958 | Traverse City [small cars] | | Giulietta | Joe Diamond | | 2nd |
| 13.7.1958 | Vila Real [GT] | | Giulietta Veloce Conrero | Manuel Nogueira Pinto | | 2nd |
| 13.7.1958 | Traverse City [Main] | | Giulietta | Al Allin | | ?th |
| 13.7.1958 | Traverse City [small cars] | | Giulietta Veloce | Bill Tuttle | | 1st |
| 13.7.1958 | Traverse City [DP+EP+Veloce] | | Giulietta Veloce | Doug Elzinga | Al Allin | 2nd |
| 19.7.1958 | Berwick [GP+HP] | 20 | Giulietta Veloce | Jim Fitzgerald | | 1st |
| 19.7.1958 | BEMC Harewood Acres [Production 1.5] | | Giulietta Sprint | Norman Webb | Norman Webb, Jr. | 2nd |
| 19.7.1958 | BEMC Harewood Acres [Production 1.5] | | Giulietta Spider Veloce | Barry Budlong | Ecurie Ecusson | 1st |
| 19.7.1958 | Berwick [GP+HP] | | Giulietta | | | raced |
| 19.7.1958 | Berwick [GP+HP] | | Giulietta Veloce | Collier Miller | | ?th |
| 19.7.1958 | Berwick [Novice] | | Giulietta Veloce | Collier Miller | | 1st |
| 19.7.1958 | Berwick [GP+HP] | | Giulietta | | | raced |
| 20.7.1958 | SCCA Regional Thompson [GP] | 6 | Giulietta Veloce | Jim Silberman | | 4th |
| 20.7.1958 | SCCA Regional Thompson [GP] | 10 | Giulietta Sprint Veloce | George Fogg | | 1st |
| 20.7.1958 | SCCA Regional Thompson [GT] | 10 | Giulietta Sprint Veloce | George Fogg | | 3rd |
| 20.7.1958 | SCCA Regional Thompson [Production] | 32 | Giulietta Veloce | Ray Anderson | | raced |
| 20.7.1958 | SCCA Regional Thompson [GP] | 32 | Giulietta Veloce | Ray Anderson | | 2nd |
| 20.7.1958 | SCCA Regional Thompson [GP] | 37 | Giulietta | Ken Long | | raced |
| 20.7.1958 | SCCA Regional Thompson [GP] | 40 | Giulietta | Ray Bloomer | | raced |
| 20.7.1958 | SCCA Regional Thompson [GP] | 57 | Giulietta Veloce | David Schiff | | raced |
| 20.7.1958 | SCCA Regional Thompson [GP] | 71 | Giulietta Veloce | John Clapp | | 3rd |
| 20.7.1958 | SCCA Regional Thompson [GP] | 83 | Giulietta Veloce | Herbert Klay | | raced |
| 20.7.1958 | SCCA Regional Thompson [GP] | 116 | Giulietta | | | raced |
| 20.7.1958 | SCCA Regional Thompson [GP] | 141 | Giulietta Veloce | Allan Lance | | raced |
| 20.7.1958 | SCCA Regional Thompson [GP] | 144 | Giulietta Veloce | Ed Mowle | | raced |
| 20.7.1958 | SCCA Regional Thompson [GP] | 171 | Giulietta | Dennis Collins | | raced |
| 20.7.1958 | SCCA Regional Thompson [GP] | 192 | Giulietta Veloce | V. Biondo | | raced |
| 26.7.1958 | MCMC Oulton Park [Closed] | 36 | Giulietta | H. D. Ellis | H. D. Ellis | DNA |
| 26.7.1958 | MCMC Oulton Park [S1.35] | 36 | Giulietta | H. D. Ellis | H. D. Ellis | DNS |
| 26.7.1958 | MCMC Oulton Park [Closed] | 39 | Giulietta | E. P. Foden | Peter Foden | 4th |
| 27.7.1958 | Trophée d'Auvergne | 34 | Giulietta | Georges Burggraff | | DNA |
| 27.7.1958 | Trophée d'Auvergne | 36 | Giulietta | Estager / Ubezzi | | DNA |
| 27.7.1958 | Trophée d'Auvergne | 44 | Giulietta Sprint Veloce Zagato | Jean-Pierre Schild | | 14th |
| 27.7.1958 | Trophée d'Auvergne | 46 | Giulietta | Raoul Martin | | 15th |
| 27.7.1958 | Trophée d'Auvergne | 52 | Giulietta Sprint Veloce Zagato | Marcel Stern | | 11th |
| 27.7.1958 | Trophée d'Auvergne | 108 | Giulietta | Bouscary / Auriacombe | | DNA |
| 27.7.1958 | Trophée d'Auvergne | 110 | Giulietta Zagato | Houel / Camarota | | DNA |
| 27.7.1958 | Trophée d'Auvergne | 112 | Giulietta | Michel Parrain | | DNA |
| 3.8.1958 | SCCA Regional Shelton [PS1.5] | 67 | Giulietta | Clifford Jensen | | DNA |
| 3.8.1958 | SCCA Regional Shelton [S1.5] | 67 | Giulietta | Clifford Jensen | | DNA |
| 3.8.1958 | Rheinland Nürburgring [GT1.3] | 81 | Giulietta Veloce | Rudolf Wilhelm Moser | | 3rd |
| 3.8.1958 | Rheinland Nürburgring [GT1.3] | 82 | Giulietta Veloce | Denise McCluggage | | 7th |
| 3.8.1958 | SCCA Regional Shelton [PS1.5] | 82 | Giulietta Veloce | Don Tindall | | 1st |
| 3.8.1958 | Rheinland Nürburgring [GT1.3] | 83 | Giulietta Sprint Veloce | Karl Foitek | | 5th |
| 3.8.1958 | Rheinland Nürburgring [GT1.3] | 84 | Giulietta Veloce | Marcel Stern | | 2nd |
| 3.8.1958 | Rheinland Nürburgring [GT1.3] | 85 | Giulietta Zagato | Georges Houel | | DNS |
| 3.8.1958 | Rheinland Nürburgring [GT1.3] | 86 | Giulietta | Warren King | | 9th |
| 3.8.1958 | Rheinland Nürburgring [GT1.3] | 89 | Giulietta Veloce | Kurt Ahrens | | 4th |
| 3.8.1958 | Rheinland Nürburgring [GT1.3] | 90 | Giulietta Veloce | Horst Estler | | 6th |
| 3.8.1958 | Rheinland Nürburgring [GT1.3] | 91 | Giulietta Veloce | Hans-Helmuth Hespen | | 8th |
| 3.8.1958 | Rheinland Nürburgring [GT1.3] | 93 | Giulietta Veloce | Herbert Schultze | | 1st |
| 3.8.1958 | SCCA Regional Shelton [PS1.5] | 111 | Giulietta | Jim Greenfield | | DNA |
| 3.8.1958 | SCCA Regional Shelton [S1.5] | 111 | Giulietta | Jim Greenfield | | DNA |
| 3.8.1958 | SCCA Regional Shelton [PS1.5] | 141 | Giulietta Veloce | Ed Crooks | | 3rd |
| 3.8.1958 | Preliminary Minden [MGA+AH+Super+Veloce] | 148 | Giulietta | Steve Froines | Steve Froines | DNA |
| 3.8.1958 | SCCA Regional Minden [FP+GP+HP] | 148 | Giulietta Veloce | Steve Froines | Steve Froines | 8th |
| 3.8.1958 | SCCA Regional Minden [BP+CP+DP+EP] | 149 | Giulietta | Jerry Lewis | Richard Feder | DNA |
| 3.8.1958 | Preliminary Minden [MGA+AH+Super+Veloce] | 263 | Giulietta Veloce | Willie West | Willie West | DNA |
| 3.8.1958 | SCCA Regional Minden [FP+GP+HP] | 263 | Giulietta Veloce | Willie West | Willie West | DNA |
| 3.8.1958 | Preliminary Minden [MGA+AH+Super+Veloce] | 297 | Giulietta Veloce | Mike Roetnor | Michael Roetnor | ?th |
| 3.8.1958 | SCCA Regional Minden [FP+GP+HP] | 297 | Giulietta Veloce | Mike Roetnor | Michael Roetnor | DNA |
| 3.8.1958 | Giro delle Calabria | | Giulietta Veloce | Carlo Mario Abate | | 4th |
| 3.8.1958 | Giro delle Calabria | | Giulietta TI | Renzo Sinibaldi | | 18th |
| 3.8.1958 | Giro delle Calabria | | Giulietta Veloce | Casimiro Toselli | | 3rd |
| 10.8.1958 | Kanonloppet [GT2.0] | 7 | Giulietta Veloce | Carl Lohmander | | 13th |
| 10.8.1958 | Kanonloppet [GT2.0] | 11 | Giulietta Veloce | Renvall / Rehnvall | | 9th |
| 10.8.1958 | Kanonloppet [GT2.0] | 16 | 1900 SS | Hakan Holmlund | | 10th |
| 16.8.1958 | SCCA National Milwaukee [FP+GP+HM] | 8 | Giulietta Veloce | Jim Kaser | | 3rd |
| 16.8.1958 | Preliminary Montgomery [GT] | 10 | Giulietta Sprint Veloce | George Fogg | | DNF |
| 16.8.1958 | SCCA National Milwaukee [FP+GP+HM] | 24 | Giulietta | Norris Hartshorn | | 16th |
| 16.8.1958 | SCCA National Milwaukee [FP+GP+HM] | 35 | Giulietta Veloce | Clint Lindburg | | 4th |
| 16.8.1958 | Preliminary Montgomery [GT] | 37 | Giulietta Sprint Veloce | Norman Webb | | 1st |
| 16.8.1958 | Preliminary Montgomery [GT] | 43 | Giulietta Veloce | John Willock | | 8th |
| 16.8.1958 | Harewood Acres [Le Mans] | 50 | Giulietta | Ernst Scheeder | Ernst W. Scheeder | DNA |
| 16.8.1958 | Harewood Acres [FP+GP+MG] | 50 | Giulietta Spider | Ernst Scheeder | Ernst W. Scheeder | 1st |
| 16.8.1958 | SCCA National Milwaukee [FP+GP+HM] | 71 | Giulietta | Paul Leland | | 12th |
| 16.8.1958 | SCCA National Milwaukee [FP+GP+HM] | 80 | Giulietta Veloce | Lee Hall | | 10th |
| 16.8.1958 | Harewood Acres [Le Mans] | 81 | Giulietta | Harold Gendelman | Harold Gendelman | DNA |
| 16.8.1958 | Harewood Acres [FP+GP+MG] | 81 | Giulietta | Harold Gendelman | Harold Gendelman | DNA |
| 16.8.1958 | Harewood Acres [FP+GP+MG] | 98 | Giulietta | Joe Diamond | J. P. Diamond | DNA |
| 16.8.1958 | Harewood Acres [Le Mans] | 98 | Giulietta | Joe Diamond | J. P. Diamond | DNA |
| 16.8.1958 | SCCA National Milwaukee [FP+GP+HM] | 111 | Giulietta Veloce | Rudy Woller | | 7th |
| 16.8.1958 | SCCA National Milwaukee [FP+GP+HM] | 137 | Giulietta Spider Veloce | Richard Gaard | | 6th |
| 16.8.1958 | SCCA National Milwaukee [FP+GP+HM] | 179 | Giulietta Sprint Veloce | Harold Kihn | | 5th |
| 17.8.1958 | Zeltweg [GT1.3] | 65 | Giulietta Sprint Veloce Zagato | Herbert Schultze | Autowax Berlin | 2nd |
| 17.8.1958 | Zeltweg [GT1.3] | 66 | Giulietta Sprint Veloce | Anton Steffan | Aga Steffan | raced |
| 17.8.1958 | Zeltweg [GT1.3] | 68 | Giulietta Sprint Veloce | Luc. Guaschino | Racing Club 19 | raced |
| 17.8.1958 | Zeltweg [GT1.3] | 69 | Giulietta Sprint Veloce | Carlo Peroglio | Racing Club 19 | raced |
| 17.8.1958 | Zeltweg [GT1.3] | 70 | Giulietta Sprint Veloce Zagato | Ada Pace | Racing Club 19 | DNA |
| 17.8.1958 | Zeltweg [GT1.3] | 71 | Giulietta Sprint Veloce | Giancarlo Baghetti | Scuderia Sant Ambroeus | raced |
| 17.8.1958 | Zeltweg [GT1.3] | 72 | Giulietta Sprint Veloce | "Frederic" | "Frederic" | raced |
| 17.8.1958 | Zeltweg [GT1.3] | 73 | Giulietta Veloce | Ernst Schmid | Ernst Schmid | DNA |