| 19.5.1968 | 1000 km Nürburgring | 2 | 908 Coupe | Siffert / Elford | Porsche | 1st |
| 19.5.1968 | 1000 km Nürburgring | 3 | 907 | Herrmann / Stommelen | Porsche | 2nd |
| 19.5.1968 | 1000 km Nürburgring | 94 | 906 | "Khandaru" / Dalla Torre | "Khandaru" | DNA |
| 19.5.1968 | 1000 km Nürburgring | 105 | 906 | Richard Broström | Sportscars Unlimited | DNA |
| 19.5.1968 | 1000 km Nürburgring | 112 | 911 T | Killy / Guichet | Porsche | 26th |
| 19.5.1968 | 1000 km Nürburgring | | 911 R | Herbert Linge | Porsche System | T-car |
| 19.5.1968 | Junioren Trophy Zandvoort | | 911 S | Renate Wowereit | | 5th |
| 19.5.1968 | Junioren Trophy Zandvoort | | 911 S | Helmut Schang | | 4th |
| 19.5.1968 | Junioren Trophy Zandvoort | | 911 T | Christian Rötzel | | 1st |
| 19.5.1968 | Junioren Trophy Zandvoort | | | Willi Miebach | | ?th |
| 19.5.1968 | Junioren Trophy Zandvoort | | 911 S | Hans-Jürgen Kramer | | 3rd |
| 19.5.1968 | Junioren Trophy Zandvoort | | 911 S | Hubertus von der Borch | | 2nd |
| 26.5.1968 | 1000 km Spa | 4 | 907 | Mitter / Schlesser | Porsche System Engineering | 2nd |
| 26.5.1968 | 1000 km Spa | 5 | 908 Coupe | Herrmann / Stommelen | Porsche System Engineering | 3rd |
| 26.5.1968 | 1000 km Spa | 5T | 908 Coupe | Vic Elford | Porsche System Engineering | T-car |
| 26.5.1968 | 1000 km Spa | 6 | 908 Coupe | Elford / Neerpasch | Porsche System Engineering | DNF |
| 26.5.1968 | 1000 km Spa | 11 | 910 | Spoerry / Steinemann | Hart Ski Racing Team | 6th |
| 26.5.1968 | 1000 km Spa | 12 | 910 | Koch / Lins | Gerhard Koch | 5th |
| 26.5.1968 | 1000 km Spa | 14 | 910 | Pon / van Lennep | Ben Pon | DNA |
| 26.5.1968 | 1000 km Spa | 30 | 906 | Lambert / Bradley | William Bradley | 7th |
| 26.5.1968 | 1000 km Spa | 48 | 906 | Widdows / Hart | Mike De Udy | DNA |
| 26.5.1968 | 1000 km Spa | 49 | 906 | Delmar-Morgan / Walton | Jeremy Delmar-Morgan | DNF |
| 26.5.1968 | 1000 km Spa | 50 | 906 | Ashmore / Edmonds | Mefco Racing | DNF |
| 26.5.1968 | 1000 km Spa | 51 | 906 | von Wendt / Kauhsen | IGFA | 21st |
| 26.5.1968 | 1000 km Spa | 60 | 911 S | Gaban / Vanderschrieck | Jean-Pierre Gaban | DNS |
| 26.5.1968 | 1000 km Spa | 62 | 911 S | Zanders / Werner | Werner Zanders | 15th |
| 26.5.1968 | 1000 km Spa | 63 | 911 T | Glemser / Kelleners | IGFA | 11th |
| 26.5.1968 | SCCA Regional Blackhawk Farms | | 356 | Tom Brennan | | ?th |
| 30.5.1968 | Trans-Am Lime Rock | 7 | 911 | Tony Adamowicz | | 4th |
| 30.5.1968 | Trans-Am Lime Rock | 11 | 911 | Jim Netterstrom | Porsche America Racing Team | DNF |
| 30.5.1968 | Trans-Am Lime Rock | 12 | 911 | Bailey / Locke | | 5th |
| 30.5.1968 | Trans-Am Lime Rock | 18? | 911 | Fred Baker | | 6th |
| 30.5.1968 | Trans-Am Lime Rock | 18? | 911 | Wetanson / Jennings | | DNF |
| 30.5.1968 | Trans-Am Lime Rock | 73 | 911 | Opert / Grimaldi | | DNF |
| 30.5.1968 | Trans-Am Lime Rock | | 911 | Marty Gifford | | 9th |
| 30.5.1968 | Trans-Am Lime Rock | | 911 | Russ Norburn | | 7th |
| 2.6.1968 | SCCA National Willow Springs [CP+DP] | 4 | 911 | Don Pike | | raced |
| 2.6.1968 | SCCA National Willow Springs [AP+BP+AS] | 4 | 904 | Charles Akly | Charles Akly | 2nd |
| 2.6.1968 | SCCA National Willow Springs [AP+BP+AS] | 11 | 904 | Milt Minter | Vasek Polak | 1st |
| 2.6.1968 | SCCA National Willow Springs [CP+DP] | 11 | 911 | Milt Minter | Vasek Polak | 2nd |
| 2.6.1968 | SCCA National Willow Springs [CP+DP] | 14 | 911 S | Ed Wakeley | Cotton Goff, Inc. | DNA |
| 2.6.1968 | SCCA National Willow Springs [CP+DP] | 22 | 911 S | Linn Ely | Linn Ely | DNA |
| 2.6.1968 | SCCA National Willow Springs [ASR+BSR+CSR] | 33 | 910 Bergspyder | Scooter Patrick | Otto Zipper | 1st |
| 2.6.1968 | GP do ACP | 34 | | Fernando Basílio dos Santos | | DNF |
| 2.6.1968 | GP do ACP | 35 | 911 R | João Andrade Villar | | 4th |
| 2.6.1968 | GP do ACP | 36 | 911 S | Américo Nunes | | 6th |
| 2.6.1968 | GP do ACP | 38 | | L. Plantier Rasteiro | | 8th |
| 2.6.1968 | SCCA National Willow Springs [ASR+BSR+CSR] | 61 | 906 | Milt Minter | Vasek Polak | DNA |
| 2.6.1968 | SCCA National Willow Springs [AP+BP+AS] | 69 | 904 | Don Pike | Otto Zipper | raced |
| 2.6.1968 | SCCA National Willow Springs [ASR+BSR+CSR] | 86 | RS | Chuck McConnell | Chuck Mc Connell | DNA |
| 2.6.1968 | USRRC St. Jovite | 88 | 906 E | Werner Frank | | 15th |
| 2.6.1968 | USRRC St. Jovite | 906 | 906 | Jean-Paul Ostiguy | | 17th |
| 2.6.1968 | GP Repubblica Vallelunga | | 910 | "Gano" | | 4th |
| 2.6.1968 | GP Repubblica Vallelunga | | 910 | Rico Steinemann | | 3rd |
| 2.6.1968 | Rhein-Ruhr Zolder | | 910 | Jürgen Neuhaus | | 1st |
| 2.6.1968 | GP Repubblica Vallelunga | | 906 | "Noris" | | 5th |
| 2.6.1968 | GP Repubblica Vallelunga | | 906 | "Nicor" | | ?th |
| 2.6.1968 | Rhein-Ruhr Zolder | | | P. M. Druxes | | ?th |
| 2.6.1968 | GP Repubblica Vallelunga | | 906 | Franco Pilone | | 6th |
| 2.6.1968 | SCCA National Willow Springs [CP+DP] | | 911 S | Alan Johnson | | 3rd |
| 3.6.1968 | Tourist Trophy | 16 | 906 | Jeff Edmonds | Jeff Edmonds | 6th |
| 3.6.1968 | Tourist Trophy | 18 | 906 | William Bradley | Midland Racing Partnership | 5th |
| 3.6.1968 | Tourist Trophy | 19 | 906 | Jeremy Delmar-Morgan | Jeremy Delmar-Morgan | 7th |
| 3.6.1968 | National Zandvoort [S/FL] | | 911 C | Carry Smit | | 5th |
| 3.6.1968 | Westwood | | 906 | Monte Shelton | | ?th |
| 3.6.1968 | National Zandvoort [S/FL] | | 906 | Toine Hezemans | | 1st |
| 3.6.1968 | Tourist Trophy | | 906 | Mike Beckwith | A. G. Dean (Racing) | 17th |
| 8.6.1968 | Preliminary Harewood Acres [Production] | | 904 | Horst Petermann | | 1st |
| 8.6.1968 | Harewood Acres [Production] | | 904 | Rainer Brezinka | | 1st |
| 9.6.1968 | Rose Cup Portland | 1 | 911 S | Charly Godecke | Charly Godecke | DNA |
| 9.6.1968 | Rose Cup Portland | 4 | 906 | Lew Florence | Lew Florence Motors | raced |
| 9.6.1968 | SCCA National Thompson | 11 | 906 | Jim Locke | | raced |
| 9.6.1968 | ICSCC Portland [SR] | 14 | | Paul Woodroffe | | DNA |
| 9.6.1968 | Rose Cup Portland | 48 | 356 Speedster | Jack Bowman | Jack Bowman | DNA |
| 9.6.1968 | Rose Cup Portland | 57 | 906 | Monte Shelton | Monte's Motors | ?th |
| 9.6.1968 | SCCA Regional Cotati [AP+BP+CP+DP+AS] | 59 | 356 2000 GS Carrera | Del Bolton | | DNA |
| 9.6.1968 | SCCA Regional Cotati [ASR+BSR+CSR+DSR] | 77 | | John Grove | | DNA |
| 9.6.1968 | Rose Cup Portland | 79 | 911 S | Todd Webb | Todd A. Webb | DNA |
| 9.6.1968 | ICSCC Portland [BIP+CIP+DIP] | 79 | 911 S | Todd Webb | Todd A. Webb | DNA |
| 9.6.1968 | ICSCC Portland [BIP+CIP+DIP] | 90 | 911 | Milt Davis | Metro Volkswagen, Inc. | DNA |
| 9.6.1968 | Rose Cup Portland | 90 | 911 | Milt Davis | Metro Volkswagen, Inc. | DNA |
| 9.6.1968 | ICSCC Portland [SR] | 90 | 911 | Milt Davis | Metro Volkswagen, Inc. | DNA |
| 9.6.1968 | SM Hockenheim | 93 | 906 | Hans Kühnis | | 3rd |
| 9.6.1968 | ICSCC Portland [BP+CP+DP] | 107 | 911 S | Jim Cleland | | DNA |
| 9.6.1968 | Rose Cup Portland | 141 | 718 RSK | Tony Campbell | Carmac Enterprises, Ltd. | DNA |
| 9.6.1968 | ICSCC Portland [SR] | 141 | 718 RSK | Tony Campbell | Carmac Enterprises, Ltd. | DNA |
| 9.6.1968 | ICSCC Portland [BP+CP+DP] | 350 | 911 S | Charly Godecke | Charly Godecke | DNA |
| 9.6.1968 | ICSCC Portland [BIP+CIP+DIP] | 350 | 911 S | Charly Godecke | Charly Godecke | DNA |
| 9.6.1968 | Rose Cup Portland | 356 | 911 | Gary Wright | Gary Wright | DNA |
| 9.6.1968 | ICSCC Portland [SR] | 387 | 356 Super 90 | Mike Stacey | | DNA |
| 9.6.1968 | Circuito do Sintrense | | 911 S | Pedro Rasteiro | | 3rd |
| 9.6.1968 | SM Hockenheim | | 910 | Karl Foitek | | raced |
| 15.6.1968 | SCCA Regional Marlboro [AP+BP+CP+DP] | 11 | 911 S | Dennis Kline | | DNA |
| 15.6.1968 | SCCA National Road America [AP+BP+CP+DP+AS] | 16 | 911 S | Bill Stroh | William Stroh | DNA |
| 15.6.1968 | SCCA Regional Marlboro [AP+BP+CP+DP] | 74 | 356 Carrera | Ernest Stalder | | DNA |
| 15.6.1968 | SCCA Regional Marlboro [AP+BP+CP+DP] | 77 | 356 Carrera | Bruce Jennings | | DNA |
| 16.6.1968 | Anderstorp [GT/TS] | 86 | 911 T | Björn Rothstein | Team Motor Halland | 1st |
| 16.6.1968 | Anderstorp [GT/TS] | 87 | 911 | Kaj Bornebusch | Team Lito | DNA |
| 16.6.1968 | Anderstorp [GT/TS] | 88 | 911 S | Sven-Olof Gunnarsson | BP Racing Club | 2nd |
| 16.6.1968 | Anderstorp [GT/TS] | 89 | 911 L | Leif Hansen | | DNA |