| 26.5.1958 | NSCC Mallory Park [S1.5] | 18 | | J. Leighton | Scuderia Birchwood | DNA |
| 26.5.1958 | NSCC Mallory Park [S1.5] | 19 | | W. G. Teale | W. G. Teale | DNA |
| 26.5.1958 | NSCC Mallory Park [S1.5] | 21 | Elite | Ian Walker | I. Walker | ?th |
| 26.5.1958 | NSCC Mallory Park [S1.5] | 26 | | Gil Baird | G. Baird | DNA |
| 26.5.1958 | NSCC Mallory Park [S1.5] | 27 | | Alex McMillan | A. McMillan | DNA |
| 26.5.1958 | NSCC Mallory Park [S1.5] | 28 | Eleven Le Mans | David Brough | Team Sapphire | ?th |
| 26.5.1958 | NSCC Mallory Park [S1.5] | 29 | Eleven | Mike Dickens | Team Sapphire | DNA |
| 26.5.1958 | NSCC Mallory Park [S1.5] | 30 | Eleven Sport | Bob Staples | Ecurie Gnuts | DNA |
| 26.5.1958 | NSCC Mallory Park [S1.5] | 31 | | Gordon Jones | G. M. Jones | ?th |
| 26.5.1958 | NSCC Mallory Park [S1.5] | 69 | Eleven | Lionel Mayman | Kay Garages | ?th |
| 31.5.1958 | Preliminary La Junta [BM+CM+DM+EM+FM+GM] | 2 | Eleven | Todd Aikens | | 7th |
| 31.5.1958 | SCCA National Bridgehampton [FM+GM] | 8 | Eleven Le Mans | Charles Moran | | 10th |
| 31.5.1958 | SCCA National Bridgehampton [FM+GM] | 12 | Eleven | Floyd Aaskov | | 4th |
| 31.5.1958 | Preliminary Santa Barbara [Modified 1.5] | 21 | Eleven Le Mans | Byron J. Snow, Jr. | Daniel Hernandez | DNA |
| 31.5.1958 | SCCA National Bridgehampton [FM+GM] | 21 | Eleven | Warren Rohlfs | | 8th |
| 31.5.1958 | Preliminary Santa Barbara [Modified +1.5] | 23 | Mark X | John Timanus | John Timanus | DNA |
| 31.5.1958 | Preliminary Santa Barbara [Modified 1.5] | 27 | Eleven | Skip Conklin | Skip Conklin | DNA |
| 31.5.1958 | Preliminary La Junta [BM+CM+DM+EM+FM+GM] | 29 | Eleven | Robin Benson | | 8th |
| 31.5.1958 | SCCA National Bridgehampton [FM+GM] | 35 | Eleven | Frank Baptista | | DNF |
| 31.5.1958 | Preliminary Santa Barbara [Ladies] | 39 | Eleven | Marion Lowe | James Rowland Lowe | DNA |
| 31.5.1958 | Preliminary Santa Barbara [Modified 1.5] | 39 | Eleven | James Lowe | James Rowland Lowe | DNA |
| 31.5.1958 | Preliminary Santa Barbara [Modified 1.5] | 44 | Eleven | Frank Monise | Frank Monise | DNA |
| 31.5.1958 | Preliminary Santa Barbara [Modified 1.5] | 102 | Eleven | Jack Nethercutt | Jack Nethercutt | DNA |
| 31.5.1958 | Preliminary Santa Barbara [Modified 1.5] | 116 | Eleven | Chuck Schroeder | Chuck Schroeder | DNA |
| 31.5.1958 | Preliminary Santa Barbara [Modified 1.5] | 117 | Mark VI | Harry J. Hanford | Harry C. Hanford | DNA |
| 31.5.1958 | SCCA National Bridgehampton [FM+GM] | 136 | Eleven | Sy Kaback | | 12th |
| 31.5.1958 | SCCA National Bridgehampton [FM+GM] | 141 | Eleven | Joe Helweg | | DNF |
| 31.5.1958 | Novice Dunkirk [CM+EM+GM+HM+BP+CP+DP] | 142 | Mark IX | Felix Christiano | | DNA |
| 31.5.1958 | LASC Green Acres [S/GT1.6] | 145 | Mark IX | Jerry Polivka | | raced |
| 31.5.1958 | Preliminary Santa Barbara [Modified 1.5] | 152 | | Charles Evans | Jay Chamberlain | DNA |
| 31.5.1958 | Novice Dunkirk [CM+EM+GM+HM+BP+CP+DP] | 158 | Mark VI | Robert Moogk | | 3rd |
| 31.5.1958 | Preliminary Santa Barbara [Modified 1.0] | 251 | Eleven Club | Ken Miles | Elmer Grimsgaard | DNA |
| 31.5.1958 | LASC Green Acres [S/GT1.6] | | | Dennis Coad | | 2nd |
| 31.5.1958 | LASC Green Acres [Main] | | Mark IX | Dennis Coad | | 2nd |
| 31.5.1958 | ICNSCC Deer Park [Modified] | | | Pete Lovely | | 6th |
| 1.6.1958 | SCCA Regional La Junta [FM+GM+HM+EP+FP+GP] | 2 | Eleven | Todd Aikens | | 2nd |
| 1.6.1958 | Santa Barbara [FM+GM+HM] | 21 | Eleven Le Mans | Byron J. Snow, Jr. | Daniel Hernandez | DNA |
| 1.6.1958 | Santa Barbara [BM+CM+DM+EM] | 23 | Mark X | John Timanus | John Timanus | DNF |
| 1.6.1958 | 1000 km Nürburgring | 27 | 15 | Frost / Hicks | Car Exchange | DNF |
| 1.6.1958 | Santa Barbara [FM+GM+HM] | 27 | Eleven | Skip Conklin | Skip Conklin | 6th |
| 1.6.1958 | 1000 km Nürburgring | 28 | Eleven Series 2 | Blumer / Power | Car Exchange | DNF |
| 1.6.1958 | 1000 km Nürburgring | 29 | Eleven | Piper / Greene | David Piper | 15th |
| 1.6.1958 | SCCA Regional La Junta [FM+GM+HM+EP+FP+GP] | 29 | Eleven | Robin Benson | | 1st |
| 1.6.1958 | 1000 km Nürburgring | 35 | Eleven | Pierre Berchem | Pierre Berchem | DNS |
| 1.6.1958 | 1000 km Nürburgring | 36 | Eleven Series 2 | Horridge / Monaco | Dan Margulies | DNF |
| 1.6.1958 | Santa Barbara [FM+GM+HM] | 39 | Eleven | James Lowe | James Rowland Lowe | 9th |
| 1.6.1958 | Santa Barbara [Ladies] | 39 | Eleven | Marion Lowe | James Rowland Lowe | 3rd |
| 1.6.1958 | Santa Barbara [FM+GM+HM] | 44 | Eleven | Frank Monise | Frank Monise | 5th |
| 1.6.1958 | Santa Barbara [FM+GM+HM] | 102 | Eleven | Jack Nethercutt | Jack Nethercutt | DNQ |
| 1.6.1958 | Consolation Santa Barbara [Modified] | 102 | Eleven | Jack Nethercutt | Jack Nethercutt | ?th |
| 1.6.1958 | Santa Barbara [FM+GM+HM] | 116 | Eleven | Chuck Schroeder | Chuck Schroeder | 22nd |
| 1.6.1958 | Santa Barbara [FM+GM+HM] | 117 | Mark VI | Harry J. Hanford | Harry C. Hanford | DNA |
| 1.6.1958 | SCCA Regional Dunkirk [FM+GM+HM] | 133 | Eleven | Tom Gilmour | | DNF |
| 1.6.1958 | SCCA Regional Dunkirk [FM+GM+HM] | 142 | Mark IX | Robert E. Davidson | | 8th |
| 1.6.1958 | Santa Barbara [FM+GM+HM] | 152 | | Charles Evans | Jay Chamberlain | 10th |
| 1.6.1958 | GP Dunkirk | 158 | Mark VI | Robert Moogk | | DNF |
| 1.6.1958 | SCCA Regional Dunkirk [FM+GM+HM] | 158 | Mark VI | Robert Moogk | | 4th |
| 1.6.1958 | Santa Barbara [FM+GM+HM] | 251 | Eleven Club | Ken Miles | Elmer Grimsgaard | DNA |
| 2.6.1958 | Roskilde Ring [S1.5] | | Eleven Le Mans Series 2 | Douglas Graham | | 2nd |
| 2.6.1958 | Roskilde Ring [S1.5] | | Eleven | Mike Taylor | | 1st |
| 2.6.1958 | Roskilde Ring [S1.5] | | Eleven Series 2 | Christopher Martyn | | 3rd |
| 2.6.1958 | Roskilde Ring [S1.5] | | Eleven | Peter Ross | | 4th |
| 7.6.1958 | LCCC Oulton Park [S1.5] | 5 | Eleven Club | Ralph Walker | Ralph Walker | DNA |
| 7.6.1958 | LCCC Oulton Park [S2.7/S+2.7] | 5 | Eleven Club | Ralph Walker | Ralph Walker | DNA |
| 7.6.1958 | LCCC Oulton Park [S1.5] | 9 | Eleven Sport | John Mitchell | John Mitchell | DNA |
| 7.6.1958 | LCCC Oulton Park [S2.7/S+2.7] | 9 | Eleven Sport | John Mitchell | John Mitchell | DNA |
| 7.6.1958 | LCCC Oulton Park [1172F/750F] | 19 | Eleven Sport | James van Sickle | James van Sickle | 5th |
| 7.6.1958 | LCCC Oulton Park [S2.7/S+2.7] | 25 | Mark IX | Rodney Bloor | Rodney Bloor | DNA |
| 7.6.1958 | LCCC Oulton Park [S1.5] | 25 | Mark IX | Warwick Bloor | Warwick Bloor | DNA |
| 7.6.1958 | LCCC Oulton Park [S2.7/S+2.7] | 29 | Eleven Series 2 | Colin Escott | Colin Escott | 2nd |
| 7.6.1958 | LCCC Oulton Park [S1.5] | 29 | Eleven Series 2 | Colin Escott | Colin Escott | 2nd |
| 7.6.1958 | LCCC Oulton Park [S1.5] | 31 | Eleven | Jim Mackay | Jimmy Mackay | DNA |
| 7.6.1958 | LCCC Oulton Park [S2.7/S+2.7] | 31 | Eleven | Jim Mackay | Jimmy Mackay | DNA |
| 7.6.1958 | LCCC Oulton Park [S1.5] | 37 | Mark VI | D. M. Pownall | D. M. Pownall | DNA |
| 7.6.1958 | LCCC Oulton Park [S2.7/S+2.7] | 37 | Mark VI | D. M. Pownall | D. M. Pownall | DNA |
| 7.6.1958 | LCCC Oulton Park [1172F/750F] | 42 | Mark IX | John Cuff | Berry Racing Organisation | DNA |
| 7.6.1958 | LCCC Oulton Park [1172F/750F] | 49 | Mark VI | Peter Gresham | Peter Gresham | 7th |
| 7.6.1958 | LCCC Oulton Park [S2.7/S+2.7] | 52 | Eleven | Barry Harpin | Barry Harpin | DNA |
| 7.6.1958 | LCCC Oulton Park [S1.5] | 52 | Eleven | Barry Harpin | Barry Harpin | DNA |
| 7.6.1958 | LCCC Oulton Park [S2.7/S+2.7] | 54 | Eleven Series 1 | Andy Walker | Andy Walker | DNA |
| 7.6.1958 | LCCC Oulton Park [S1.5] | 54 | Eleven Series 1 | Andy Walker | Andy Walker | DNA |
| 7.6.1958 | LCCC Oulton Park [S1.5] | 66 | Eleven | Nicholas Green | Nicholas Green | DNA |
| 7.6.1958 | LCCC Oulton Park [S2.7/S+2.7] | 66 | Eleven | Nicholas Green | Nicholas Green | DNA |
| 7.6.1958 | LCCC Oulton Park [S1.5] | 72 | Eleven | Bill Allen | Bill Allen | DNF |
| 7.6.1958 | LCCC Oulton Park [S2.7/S+2.7] | 72 | Eleven | Bill Allen | Bill Allen | DNA |
| 7.6.1958 | LCCC Oulton Park [1172F/750F] | 73 | Seven | Ronnie Mitton | Ronnie Mitton | DNA |
| 7.6.1958 | LCCC Oulton Park [S2.7/S+2.7] | 76 | Eleven Sport | Peter Anders | Peter Anders | DNA |
| 7.6.1958 | LCCC Oulton Park [S2.7/S+2.7] | 80 | Eleven | Mayman / Mayman | Kay Garages Ltd. | DNS |
| 7.6.1958 | LCCC Oulton Park [S1.5] | 80 | Eleven | Lionel Mayman | Kay Garages Ltd. | DNF |
| 7.6.1958 | LCCC Oulton Park [S2.7/S+2.7] | 83 | Eleven | John Fredman | John Fredman | DNA |
| 7.6.1958 | LCCC Oulton Park [S2.7/S+2.7] | 89 | Eleven | K. Vernon | K. T. Vernon | DNA |
| 7.6.1958 | LCCC Oulton Park [1172F/750F] | 94 | Eleven Sport | Bob Staples | Ecurie Gnuts | 4th |
| 7.6.1958 | LCCC Oulton Park [1172F/750F] | 97 | Mark VI | Peter Belton | Peter Belton | DNA |
| 7.6.1958 | LCCC Oulton Park [S2.7/S+2.7] | 104 | Eleven | John Romanes | John Romanes | DNA |
| 7.6.1958 | LCCC Oulton Park [S2.7/S+2.7] | 118 | Eleven Series 2 | Tom Dickson | Dickson Motors Ltd. | 1st |
| 7.6.1958 | LCCC Oulton Park [S2.7/S+2.7] | 126 | 15 | Edward Greenall | J. L. King | DNA |
| 7.6.1958 | LCCC Oulton Park [1172F/750F] | 127 | Eleven Sport | A. J. Korczynski | A. J. Korczyinski | DNA |
| 7.6.1958 | LCCC Oulton Park [S2.7/S+2.7] | 128 | Eleven | Greg Wood | Greg Wood | DNA |
| 7.6.1958 | LCCC Oulton Park [1172F/750F] | 129 | | G. K. Cassir | G. K. Cassir | DNA |
| 7.6.1958 | LCCC Oulton Park [1172F/750F] | 131 | Eleven Sport | Ralph Walker | Ralph Walker | 6th |