| 15.5.1958 | Aspern [S+1.5] | 1 | 250 TR Scaglietti Spyder 58 | Gotfrid Köchert | Gotfrid Köchert | 1st |
| 15.5.1958 | Eläintarhanajo | 3 | 500 TRC | Lars Finnilä | Scuderia Askolin | 9th |
| 15.5.1958 | Aspern [S+1.5] | 3 | 750 Monza | Gerard Pittel | Ecurie Léman | raced |
| 15.5.1958 | Eläintarhanajo | 4 | 500 TR | Fred Geitel | | 10th |
| 15.5.1958 | Aspern [S+1.5] | 5 | 500 TRC | Peter Monteverdi | Peter Monteverdi | DNA |
| 15.5.1958 | Eläintarhanajo | 6 | 500 Mondial | Olle Persson | | DNS |
| 15.5.1958 | Eläintarhanajo [GT] | 11 | 250 GT Europa Farina Berlinetta TdF | Curt Lincoln | | 1st |
| 15.5.1958 | Aspern [S+1.5] | 11 | 500 TR Scaglietti Spyder | Gino Munaron | Gino Munaron | raced |
| 15.5.1958 | Aspern [S+1.5] | 12 | 500 TRC | Franco Cortese | Franco Cortese | 2nd |
| 15.5.1958 | Eläintarhanajo | 12 | 250 TR Scaglietti Spyder 58 | Curt Lincoln | Scuderia Askolin | 3rd |
| 15.5.1958 | Eläintarhanajo [GT] | 13 | 250 GT | John Kvarnström | | 3rd |
| 15.5.1958 | Eläintarhanajo | 15 | 750 Monza | John Kvarnström | | 7th |
| 15.5.1958 | Eläintarhanajo | 16 | 750 Monza Scaglietti Spyder | Carl-Otto Bremer | Carl-Otto Bremer | 4th |
| 15.5.1958 | Aspern [GT+1.6] | 30 | 250 GT LWB Berlinetta Scaglietti TdF | Carlo Leto di Priolo | Scuderia Ambrosiana | 1st |
| 15.5.1958 | Aspern [GT+1.6] | 31 | 250 GT | Ottavio Randaccio | Scuderia Ambrosiana | 4th |
| 15.5.1958 | Aspern [GT+1.6] | 32 | 250 GT | Harry Zweifel | Scuderia Giarona | raced |
| 15.5.1958 | Aspern [GT+1.6] | 39 | 250 GT | | Giorgio Meier | raced |
| 17.5.1958 | Chester | | 750 Monza Scaglietti Spyder | E. D. Martin | | DNF |
| 18.5.1958 | SCCA National Cumberland [BM+CM+DM] | 4 | 375 MM | Duncan Black | Duncan Black | DNA |
| 18.5.1958 | SCCA National Cumberland [EM+FM] | 7 | 500 TR Scaglietti Spyder | John Quackenbush | J. V. Quackenbush | 2nd |
| 18.5.1958 | GP Spa | 7 | 250 TR | Rapetti | | DNA |
| 18.5.1958 | GP Spa | 8 | 250 TR Scaglietti Spyder 58 | Lincoln | Scuderia Askolin | DNA |
| 18.5.1958 | GP Spa | 9 | 312 S | Olivier Gendebien | Equipe Nationale Belge | DNF |
| 18.5.1958 | GP Spa | 11 | 250 TR Scaglietti Spyder 58 | Lucien Bianchi | Equipe Nationale Belge | 5th |
| 18.5.1958 | SCCA National Cumberland [BM+CM+DM] | 15 | 250 TR Scaglietti Spyder 58 | Jim Johnston | James R. Johnston | DNA |
| 18.5.1958 | SCCA National Cumberland [EM+FM] | 25 | 500 TRC | Gaston Andrey | Mike Garber | 3rd |
| 18.5.1958 | GP Spa | 28 | 250 GT | André Guelfi | André Guelfi | ?th |
| 18.5.1958 | GP Spa | 29 | 250 GT | Finnilä | | DNA |
| 18.5.1958 | GP Spa | 30 | 250 GT | Wolfgang Seidel | Wolfgang Seidel | 16th |
| 18.5.1958 | GP Spa | 31 | 250 GT | Pierre Noblet | | ?th |
| 18.5.1958 | GP Spa | 32 | 250 GT | Michel Ringoir | Equipe Nationale Belge | ?th |
| 18.5.1958 | GP Spa | 33 | 250 GT | Hermano da Silva Ramos | Hernano Da Silva Ramos | ?th |
| 18.5.1958 | GP Spa | 34 | 250 GT | Jean Guichet | | DNS |
| 18.5.1958 | GP Spa | 35 | 250 GT | "Eldé" | Equipe Nationale Belge | ?th |
| 18.5.1958 | GP Spa | 36 | 250 GT | Bombardini | | DNA |
| 18.5.1958 | GP Spa | 37 | 250 GT | Antonino | | DNA |
| 18.5.1958 | SCCA National Cumberland [BP+CP] | 90 | 250 GT | Paul Norair | Paul H. Norair | DNA |
| 18.5.1958 | SCCA National Cumberland [BM+CM+DM] | 118 | 750 Monza | Ed Gelder | Edward H. Gelder | raced |
| 18.5.1958 | Preliminary Cumberland [Ladies] | 118 | 750 Monza | Peggy McClure | Edward H. Gelder | raced |
| 18.5.1958 | SCCA National Cumberland [BM+CM+DM] | 195 | 375 Plus | George Reed | George Reed, Jr. | DNA |
| 18.5.1958 | SCCA National Cumberland [BP+CP] | 196 | 250 GT LWB Berlinetta TdF | George Reed | George Reed, Jr. | ?th |
| 18.5.1958 | SCCA National Cumberland [BP+CP] | | 250 GT LWB Scaglietti Berlinetta TdF | George Arents | | 2nd |
| 18.5.1958 | SCCA National Cumberland [EM+FM] | | | Leonard Butscher | | ?th |
| 25.5.1958 | GP des Frontières | 12 | 500 TRC | Fernand Tavano | | DNF |
| 25.5.1958 | Hourglass Field [Main] | | | Chuck Cornett | | DNA |
| 31.5.1958 | Preliminary La Junta [BM+CM+DM+EM+FM+GM] | 11 | 500 TRC | Ray Jones | A. D. Logan | 1st |
| 31.5.1958 | Preliminary Santa Barbara [Modified +1.5] | 11 | 250 TR | von Neumann / Ginther | John von Neumann | DNA |
| 31.5.1958 | Preliminary Santa Barbara [Ladies] | 14 | 166 MM/53 | Mari Grimm | Jack L. Grimm | DNA |
| 31.5.1958 | Preliminary Santa Barbara [Modified +1.5] | 14 | 166 MM/53 | Jack Grimm | Jack L. Grimm | DNA |
| 31.5.1958 | Preliminary Santa Barbara [Modified +1.5] | 69 | 375 Plus | Dan Gurney | Frank Arciero | 1st |
| 31.5.1958 | Preliminary Santa Barbara [BP+CP] | 91 | 250 GT LWB Berlinetta Scaglietti TdF | Jim Connor | George Reis | DNA |
| 31.5.1958 | Preliminary Bridgehampton [GT] | 96 | 250 GT LWB Scaglietti Berlinetta TdF | George Arents | | 1st |
| 31.5.1958 | SCCA National Bridgehampton [BP+CP+UR+FIII] | 96 | 250 GT LWB Scaglietti Berlinetta TdF | George Arents | | 2nd |
| 31.5.1958 | Preliminary Santa Barbara [Modified +1.5] | 112 | 500 TR | John von Neumann | John von Neumann | 2nd |
| 31.5.1958 | Preliminary Santa Barbara [Ladies] | 112 | 500 TR | Josie von Neumann | John von Neumann | DNA |
| 31.5.1958 | Preliminary Santa Barbara [Modified +1.5] | 211 | 250 TR Scaglietti Spyder 58 | Richie Ginther | John von Neumann | DNA |
| 31.5.1958 | Novice Dunkirk [CM+EM+GM+HM+BP+CP+DP] | 571 | 500 Mondial | Jack Brewer | | 2nd |
| 31.5.1958 | Preliminary Santa Barbara [BP+CP] | 777 | 250 GT | Elliot Forbes-Robinson | Charles Keeney | DNA |
| 31.5.1958 | ICNSCC Deer Park [Modified] | | 500 TRC | Frank Becker | | 4th |
| 31.5.1958 | Preliminary La Junta [BM+CM+DM+EM+FM+GM] | | | Dick Irish | Dean Knight | 4th |
| 31.5.1958 | ICNSCC Deer Park [Formula Libre] | | 500 TRC | Frank Becker | | 2nd |
| 1.6.1958 | 1000 km Nürburgring | 4 | 250 TR Scaglietti Spyder | Hawthorn / Collins | Scuderia Ferrari | 2nd |
| 1.6.1958 | 1000 km Nürburgring | 5 | 250 TR Scaglietti Spyder | Musso / Hill | Scuderia Ferrari | 4th |
| 1.6.1958 | 1000 km Nürburgring | 6 | 250 TR Scaglietti Spyder | Seidel / Munaron / Musso | Scuderia Ferrari | 5th |
| 1.6.1958 | 1000 km Nürburgring | 7 | 250 TR Scaglietti Spyder | von Trips / Gendebien | Scuderia Ferrari | 3rd |
| 1.6.1958 | Consolation Santa Barbara [Modified] | 11 | 250 TR | John von Neumann | John von Neumann | 2nd |
| 1.6.1958 | Santa Barbara [BM+CM+DM+EM] | 11 | 250 TR | John von Neumann | John von Neumann | 4th |
| 1.6.1958 | SCCA Regional La Junta [BM+CM+DM+EM+BP+CP+DP] | 11 | 500 TRC | Ray Jones | A. D. Logan | 1st |
| 1.6.1958 | 1000 km Nürburgring | 11 | 250 TR Scaglietti Spyder 58 | Mairesse / de Changy | Equipe Nationale Belge | DNF |
| 1.6.1958 | GP Dunkirk | 11 | 250 MM | William Infantino | | 1st |
| 1.6.1958 | SCCA Regional Dunkirk [CM+DM+EM+CP] | 11 | 250 MM | William Infantino | | 2nd |
| 1.6.1958 | 1000 km Nürburgring | 12 | 250 TR Scaglietti Spyder 58 | Köchert / Bauer | Österreicher Automobil-Sport-Club | 10th |
| 1.6.1958 | 1000 km Nürburgring | 14 | 750 Monza | Carlsson / Bremer | Scuderia Ferrari Svezia Oerebro | DNF |
| 1.6.1958 | Santa Barbara [BM+CM+DM+EM] | 14 | 166 MM/53 | Jack Grimm | Jack L. Grimm | DNF |
| 1.6.1958 | Santa Barbara [Ladies] | 14 | 166 MM/53 | Mari Grimm | Jack L. Grimm | raced |
| 1.6.1958 | 1000 km Nürburgring | 15 | 250 TR Scaglietti Spyder 58 | Lincoln / Keinänen | Scuderia Askolin | 12th |
| 1.6.1958 | SCCA National Bridgehampton [BM+CM+DM+EM+FM] | 25 | 500 TRC | Gaston Andrey | | 6th |
| 1.6.1958 | SCCA National Bridgehampton [BM+CM+DM+EM+FM] | 30 | 500 TRC | William Helburn | | 12th |
| 1.6.1958 | SCCA National Bridgehampton [BM+CM+DM+EM+FM] | 34 | 500 Mondial | Leonard Butscher | | 13th |
| 1.6.1958 | 1000 km Nürburgring | 40 | 250 GT Europa Farina Berlinetta TdF | Finnilä / Geitel | Scuderia Askolin | 27th |
| 1.6.1958 | 1000 km Nürburgring | 41 | 250 GT LWB Scaglietti | "Eldé" / "Beurlys" | Ecurie Francorchamps | 24th |
| 1.6.1958 | SCCA National Bridgehampton [BM+CM+DM+EM+FM] | 41 | 315 Sport | E. D. Martin | | 3rd |
| 1.6.1958 | 1000 km Nürburgring | 42 | 250 GT | Zampiero / Villotti | Scuderia Trentina | 26th |
| 1.6.1958 | 1000 km Nürburgring | 43 | 250 GT | da Silva Ramos / Guelfi | Da Silva | DNA |
| 1.6.1958 | 1000 km Nürburgring | 44 | 250 GT | Bruce Kessler | El Salvador Central America Tegards | DNS |
| 1.6.1958 | 1000 km Nürburgring | 45 | 250 GT LWB | Picard / Kessler | François Picard | DNF |
| 1.6.1958 | Santa Barbara [BM+CM+DM+EM] | 69 | 375 Plus | Dan Gurney | Frank Arciero | DNF |
| 1.6.1958 | Santa Barbara [BP+CP+DP] | 91 | 250 GT LWB Berlinetta Scaglietti TdF | Jim Connor | George Reis | 1st |
| 1.6.1958 | Santa Barbara [BM+CM+DM+EM] | 112 | 500 TR | John von Neumann | John von Neumann | DNA |
| 1.6.1958 | Santa Barbara [Ladies] | 112 | 500 TR | Josie von Neumann | John von Neumann | 1st |
| 1.6.1958 | SCCA Regional Dunkirk [CM+DM+EM+CP] | 135 | 750 Monza | Ed Gelder | | DNF |
| 1.6.1958 | Santa Barbara [BM+CM+DM+EM] | 211 | 250 TR Scaglietti Spyder 58 | Richie Ginther | John von Neumann | 3rd |
| 1.6.1958 | SCCA Regional Dunkirk [CM+DM+EM+CP] | 571 | 500 Mondial | Jack Brewer | | DNF |
| 1.6.1958 | Santa Barbara [BP+CP+DP] | 777 | 250 GT | Elliot Forbes-Robinson | Charles Keeney | 3rd |
| 1.6.1958 | SCCA Regional La Junta [BM+CM+DM+EM+BP+CP+DP] | | 340 America | | | DNF |
| 7.6.1958 | Preliminary Eagle Mountain [race 3] | | 500 TRC | Ray Jones | A. D. Logan | 2nd |
| 8.6.1958 | Preliminary Lawrenceville [BM+CM+DM+EM+FM+GM] | 15 | 250 TR Scaglietti Spyder 58 | Jim Johnston | | ?th |
| 8.6.1958 | SCCA Regional Lawrenceville [BM+CM+DM+EM+FM+GM] | 15 | 250 TR Scaglietti Spyder 58 | Jim Johnston | | ?th |
| 8.6.1958 | SCCA Regional Thompson [BM+CM+EM+FM] | 125 | 500 TRC | Gaston Andrey | | DNA |
| 8.6.1958 | SCCA Regional Eagle Mountain [race 10] | | 500 TRC | Ray Jones | A. D. Logan | 2nd |