| 22.6.1958 | SCCA National Road America [BM+CM+DM+BP] | 3 | D-type | Don Skogmo | Don R. Skogmo | 10th |
| 22.6.1958 | 24 h Le Mans | 6 | D-type | Fairman / Gregory | Ecurie Ecosse | DNF |
| 22.6.1958 | 24 h Le Mans | 7 | D-type | Sanderson / Lawrence | Ecurie Ecosse | DNF |
| 22.6.1958 | 24 h Le Mans | 8 | D-type | Bueb / Hamilton | J. Duncan Hamilton | DNF |
| 22.6.1958 | SCCA National Road America [CP+DP+EP] | 9 | XK120 | Roy Fleishmann | | 21st |
| 22.6.1958 | 24 h Le Mans | 11 | D-type | Guelfi / "Mary" | Henri Peignaux | DNF |
| 22.6.1958 | SCCA National Road America [BM+CM+DM+BP] | 12 | C-type | Mason O'Keiff | G. Mason O'Keiff | DNA |
| 22.6.1958 | SCCA National Road America [BM+CM+DM+BP] | 17 | D-type | Jack Ensley | Jack R. Ensley | DNA |
| 22.6.1958 | SCCA National Road America [CP+DP+EP] | 33 | XK140 | Dave Causey | | 8th |
| 22.6.1958 | 24 h Le Mans | 57 | D-type | Charles / Young | Maurice Charles | DNF |
| 22.6.1958 | SCCA National Road America [BM+CM+DM+BP] | 75 | C-type | Bill Zorn | William Zorn | DNA |
| 27.6.1958 | SCCA Regional Watkins Glen [BP+CP] | 7 | XK120 | Slako Bilinski | | 10th |
| 27.6.1958 | SCCA Regional Watkins Glen [BP+CP] | 25 | XK120 | Kenneth MacDonald | | DNF |
| 27.6.1958 | SCCA Regional Watkins Glen [BP+CP] | 45 | XK120 | Andrew Nicholas | | 5th |
| 27.6.1958 | SCCA Regional Watkins Glen [BM+CM+DM+EM+FM+GM] | 53 | D-type | William Kinchloe | | DNF |
| 27.6.1958 | SCCA Regional Watkins Glen [BM+CM+DM+EM+FM+GM] | 64 | Special | John Dowd | | 9th |
| 27.6.1958 | SCCA Regional Watkins Glen [BP+CP] | 65 | XK120 M | William Milliken | | 11th |
| 27.6.1958 | SCCA Regional Watkins Glen [BP+CP] | 108 | XK120 | Bruce Cargill | | 7th |
| 29.6.1958 | WJC Charterhall [S+1.5] | 38 | D-type | Jim Clark | Border Reivers | 1st |
| 29.6.1958 | WJC Charterhall [Racing] | 38 | D-type | Jim Clark | Border Reivers | 1st |
| 29.6.1958 | WJC Charterhall [Racing] | 46 | C-type | Alan Ensoll | A. Ensoll | DNA |
| 29.6.1958 | WJC Charterhall [S+1.5] | 46 | C-type | Alan Ensoll | A. Ensoll | 2nd |
| 29.6.1958 | WJC Charterhall [S+1.5] | 49 | | S. Wallace | S. Wallace | DNA |
| 29.6.1958 | WJC Charterhall [Racing] | 49 | | S. Wallace | S. Wallace | DNA |
| 29.6.1958 | St. Eugene [S+1.6] | | XKSS | Stan McRobert | | 1st |
| 29.6.1958 | St. Eugene [S+1.6] | | XK140 | Maurice Dufresne | | DNA |
| 29.6.1958 | St. Eugene [Formula Libre] | | XK120 | Fred Richardson | | 2nd |
| 29.6.1958 | St. Eugene [Formula Libre] | | XKSS | Stan McRobert | | 1st |
| 4.7.1958 | Orange County [S+1.5] | | XKSS | Bill Leyden | | DNA |
| 4.7.1958 | Orange County [Ladies] | | XK140 | Kay Furcho | | 3rd |
| 4.7.1958 | Orange County [Production +1.6] | | XK140 | Bob Kudler | | 2nd |
| 5.7.1958 | Novice Vaca Valley [Production +1.6] | 1 | XK120 | Robert Beale | Robert Beale, Jr. | DNA |
| 5.7.1958 | LASC Green Acres [S+2.6] | 27 | XKSS | Don Stewart | Donald Stewart | 4th |
| 5.7.1958 | National Open Crystal Palace | 42 | D-type | Reg Harris | J. C. Broadhead | raced |
| 5.7.1958 | National Open Crystal Palace | 43 | D-type | Jonathan Sieff | J. Sieff | raced |
| 5.7.1958 | SCCA National Lime Rock [CM+DM+EM+FM] | 52 | C-type | Gordon MacKenzie | | 12th |
| 5.7.1958 | LASC Green Acres [S+2.6] | 56 | XK120 M | Ham Leong | Ham S. Leong | DNA |
| 5.7.1958 | LASC Green Acres [Formula Libre] | 56 | XK120 M | Ham Leong | Ham S. Leong | DNA |
| 5.7.1958 | SCCA National Lime Rock [BP+CP] | 91 | XK150 S | Bob Grossman | | 6th |
| 5.7.1958 | LASC Green Acres [S+2.6] | 96 | | Ray Liddle | | 6th |
| 5.7.1958 | LASC Green Acres [S+2.6] | 104 | XK150 S | Ray Carter | | 7th |
| 5.7.1958 | Novice Vaca Valley [Production +1.6] | 109 | | Frank Morrill | Frank Morrill | DNA |
| 5.7.1958 | Preliminary Vaca Valley [TR+Morgan+AH+Veloce+Super] | 146 | XK120 M | Dave Ridenour | Dave Ridenour | DNA |
| 5.7.1958 | SCCA National Lime Rock [BP+CP] | 171 | XK150 S | Howard Quick | | 10th |
| 5.7.1958 | Novice Vaca Valley [Production +1.6] | 185 | XK140 MC | Floyd Shannon | Floyd Shannon | DNA |
| 6.7.1958 | SCCA Regional Vaca Valley [BP+CP+DP+EP] | 1 | | Larry Albedi | Larry Albedi | DNA |
| 6.7.1958 | Preliminary Vaca Valley [300SL+Jag+Bristol+Corv+Carrera+AHS] | 1 | | Larry Albedi | Robert Beale | DNA |
| 6.7.1958 | Hammond [Main] | 12 | C-type | Mason O'Keiff | | DNF |
| 6.7.1958 | Hammond [BM+CM+DM+EM] | 12 | C-type | Mason O'Keiff | | DNF |
| 6.7.1958 | BMRC Charterhall [Production Handicap] | 26 | XK120 | R. T. Fawdington | R. T. Fawdington | raced |
| 6.7.1958 | BMRC Charterhall [BMRC Trophy Handicap] | 38 | D-type | Jim Clark | Border Reivers | 2nd |
| 6.7.1958 | BMRC Charterhall [Sports Handicap] | 38 | D-type | Jimmy Somervail | Border Reivers | raced |
| 6.7.1958 | BMRC Charterhall [Racing Handicap] | 38 | D-type | Jim Clark | Border Reivers | 1st |
| 6.7.1958 | BMRC Charterhall [BMRC Trophy Handicap] | 62 | C-type | Gil Tyrer | G. Tyrer | 4th |
| 6.7.1958 | BMRC Charterhall [Racing Handicap] | 62 | C-type | Gil Tyrer | G. Tyrer | 3rd |
| 6.7.1958 | BMRC Charterhall [Sports Handicap] | 62 | C-type | Gil Tyrer | G. Tyrer | 4th |
| 6.7.1958 | BMRC Charterhall [BMRC Trophy Handicap] | 65 | XK150 | Charles Ramsay | C. A. Ramsay | DNE |
| 6.7.1958 | BMRC Charterhall [Sports Handicap] | 72 | XK120 | D. Ramsay | G. L. Crozier | DNA |
| 6.7.1958 | BMRC Charterhall [Production Handicap] | 72 | XK120 | Gordon Crozier | G. L. Crozier | DNA |
| 6.7.1958 | Hammond [Main] | 77 | D-type | C. K. Thompson | | 2nd |
| 6.7.1958 | Preliminary Vaca Valley [300SL+Jag+Bristol+Corv+Carrera+AHS] | 77 | | Andy Nielsen | Andy Nielsen | DNA |
| 6.7.1958 | SCCA Regional Vaca Valley [BP+CP+DP+EP] | 77 | XK140 | Andy Nielsen | Andy Nielsen | 4th |
| 6.7.1958 | Hammond [BM+CM+DM+EM] | 77 | D-type | C. K. Thompson | | 2nd |
| 6.7.1958 | SCCA Regional Vaca Valley [BP+CP+DP+EP] | 146 | XK120 M | Dave Ridenour | Dave Ridenour | DNA |
| 6.7.1958 | SCCA Regional Vaca Valley [BP+CP+DP+EP] | 185 | XK140 MC | Floyd Shannon | Floyd Shannon | 19th |
| 6.7.1958 | SCCA Regional Vaca Valley [BP+CP+DP+EP] | 194 | | Lawrence Hagin | Larry Hagin | DNA |
| 6.7.1958 | Baden Rock | | | Flaerti | | 3rd |
| 6.7.1958 | Baden Rock | | | Vilmor | | 5th |
| 6.7.1958 | Preliminary Minneapolis [Novice] | | D-type | John Barlass | Don Skogmo | 1st |
| 6.7.1958 | Preliminary Minneapolis [S+1.6] | | D-type | Don Skogmo | Don Skogmo | 1st |
| 6.7.1958 | SCCA Regional Minneapolis [Main] | | D-type | Don Skogmo | Don Skogmo | 1st |
| 12.7.1958 | BRSCC Full Sutton [SR] | 71 | D-type | Reg Harris | | 6th |
| 12.7.1958 | BRSCC Full Sutton [SR/R] | 71 | D-type | Reg Harris | | 8th |
| 12.7.1958 | BRSCC Full Sutton [SR/R] | 72 | C-type | Gil Tyrer | | 9th |
| 12.7.1958 | BRSCC Full Sutton [SR] | 72 | C-type | Gil Tyrer | | 7th |
| 12.7.1958 | BRSCC Full Sutton [SR/R] | 73 | D-type | Jim Clark | Border Reivers | 1st |
| 12.7.1958 | BRSCC Full Sutton [SR] | 73 | D-type | Jim Clark | Border Reivers | 1st |
| 12.7.1958 | BRSCC Full Sutton [SR] | 75 | D-type | Jonathan Sieff | | 2nd |
| 12.7.1958 | BRSCC Full Sutton [SR/R] | 75 | D-type | Jonathan Sieff | | 2nd |
| 12.7.1958 | BRSCC Full Sutton [SR] | 76 | C-type | B. Green | | 8th |
| 12.7.1958 | BRSCC Full Sutton [SR/R] | 76 | C-type | B. Green | | 6th |
| 12.7.1958 | AMOC Silverstone [S+1.5] | | C-type | Mike Salmon | | 6th |
| 13.7.1958 | LISCA Lime Rock [BP+CP] | 30 | XK140 MC | Bob Otten | | ?th |
| 13.7.1958 | LISCA Lime Rock [UR] | 62 | Special | Gerry Georgi | | 1st |
| 13.7.1958 | LISCA Lime Rock [BP+CP] | 97 | XK150 S | Bob Grossman | | raced |
| 19.7.1958 | GP Silverstone | 25 | D-type | Innes Ireland | Ecurie Ecosse | 9th |
| 19.7.1958 | 1 h Harewood Acres | | XK150 S | Ray Carter | Carter's British Cars | 2nd |
| 19.7.1958 | BEMC Harewood Acres [Modified +1.5] | | XKSS | Don Stewart | | raced |
| 19.7.1958 | BEMC Harewood Acres [Modified +1.5] | | XK150 S | Ray Carter | Carter's British Cars | ?th |
| 19.7.1958 | 1 h Harewood Acres | | XKSS | Don Stewart | | 3rd |
| 20.7.1958 | SCCA Regional Thompson [Modified+UR] | 7 | Special | Gerry Georgi | | 3rd |
| 20.7.1958 | SCCA Regional Thompson [BP+CP] | 13 | XK140 MC | Robert Ryan | | 6th |
| 20.7.1958 | SCCA Regional Thompson [BP+CP] | 19 | XK150 S | Bob Grossman | | raced |
| 20.7.1958 | SCCA Regional Thompson [Production] | 19 | XK150 S | Bob Grossman | | raced |
| 20.7.1958 | SCCA Regional Thompson [BP+CP] | 20 | XK120 | Bruce Cargill | | raced |
| 20.7.1958 | SCCA Regional Thompson [BP+CP] | 21 | XK140 MC | D. Smollen | | raced |
| 20.7.1958 | SCCA Regional Thompson [GT] | 41 | XK120 | Roly Heacox | | 9th |
| 20.7.1958 | SCCA Regional Thompson [Modified+UR] | 52 | C-type | Gordon MacKenzie | | ?th |
| 20.7.1958 | SCCA Regional Thompson [BP+CP] | 60 | XK150 S | Harry Carter | | 4th |
| 26.7.1958 | MCMC Oulton Park [Formula Libre] | 20 | D-type | Reg Harris | J. C. Broadhead | 4th |