| 22.1.1981 | Australian SCC Sandown | | 911 Carrera | Peter Fitzgerald | | ?th |
| 22.1.1981 | Australian SCC Sandown | | 935/77A | John Latham | | 1st |
| 22.1.1981 | Australian SCC Sandown | | 930 | Johnnie Walker | | 2nd |
| 1.2.1981 | 24 h Daytona | 0 | 935 K3/80 | Field / Minter / Ongais | Interscope Racing | 39th |
| 1.2.1981 | 24 h Daytona | 00 | 935 K3/80 | Field / Ongais / Minter | Interscope Racing | DNS |
| 1.2.1981 | 24 h Daytona | 01 | 911 Carrera RSR | Brunn / Kirby / Hotchkis | Kirby-Hitchcock Racing | 32nd |
| 1.2.1981 | 24 h Daytona | 03 | 934 | Pallavicini / Sheldon / Crang | Angelo Pallavicini | 38th |
| 1.2.1981 | 24 h Daytona | 04 | 911 Carrera RSR | Almeida / Rodriguez / Morejon | T & R Racing | 20th |
| 1.2.1981 | 24 h Daytona | 05 | 911 Carrera RSR | Almeida / Rodriguez / Flaquer | T & R Racing | DNS |
| 1.2.1981 | 24 h Daytona | 07 | 935 | Heimrath / Heimrath, Jr. | Heimrath Racing | 14th |
| 1.2.1981 | 24 h Daytona | 09 | 935 K3 | Henn / Bondurant | Thunderbird Swap Shop | 64th |
| 1.2.1981 | 24 h Daytona | 1 | 935 K3/80 | Fitzpatrick / Busby / Wollek | John Fitzpatrick Racing | 48th |
| 1.2.1981 | 24 h Daytona | 5 | 935 K3 | Akin / Siebert / Bell | Bob Akin Motor Racing | 2nd |
| 1.2.1981 | 24 h Daytona | 6 | 935 J | Merl / Mass | Joest Racing | 59th |
| 1.2.1981 | 24 h Daytona | 8 | 935 JLP-3 | Paul, Jr. / Smiley | JLP Racing | DNA |
| 1.2.1981 | 24 h Daytona | 9 | 935 K3/80 | Garretson / Rahal / Redman | Garretson Racing/Style Auto | 1st |
| 1.2.1981 | 24 h Daytona | 11 | 924 Carrera GTR | Holbert / Mears / Bundy | Holbert Racing | 40th |
| 1.2.1981 | 24 h Daytona | 12 | 924 Carrera GTR | | Holbert Racing | DNA |
| 1.2.1981 | 24 h Daytona | 15 | 911 Carrera RSR 3.0 | Lutz / Boone | D. L. Performance Engineering | 63rd |
| 1.2.1981 | 24 h Daytona | 18 | 935 JLP-2 | Paul / Paul, Jr. | JLP Racing | 60th |
| 1.2.1981 | 24 h Daytona | 19 | 911 Carrera RSR | Van Every / Tisdelle / Bond | Van Every Racing | 44th |
| 1.2.1981 | 24 h Daytona | 22 | 914/4 | Baker / Gilliland / Harmstad | Personalized Autohaus | 49th |
| 1.2.1981 | 24 h Daytona | 27 | 911 Carrera | Southard / Kjoller / Kjoller | Southard Motor Racing | 17th |
| 1.2.1981 | 24 h Daytona | 30 | 935 J | Moretti / Mendez / DeNarvaez | Momo/Penthouse | 34th |
| 1.2.1981 | 24 h Daytona | 33 | 914/6 | Zitza / Zitza / Dube | Zotz Garage | 50th |
| 1.2.1981 | 24 h Daytona | 34 | 911 Carrera S | Drolsom / Hoskins / Johnson | Drolsom Racing | 15th |
| 1.2.1981 | 24 h Daytona | 36 | 924 Carrera GTR | Miller / Bedard / McKitterick | Herman & Miller P+A | 22nd |
| 1.2.1981 | 24 h Daytona | 37 | 935 M16 | Romero / Gonzalez / Mendez | Pepe Romero | 52nd |
| 1.2.1981 | 24 h Daytona | 38 | 911 | Case / Panaccione / Tilton | Case Racing | 47th |
| 1.2.1981 | 24 h Daytona | 43 | 911 Carrera | Young / Jones / Gregg | Bob Gregg Racing | 27th |
| 1.2.1981 | 24 h Daytona | 45 | 914/6 | Speer / Mitchell / Ratcliff | Autosport Technology | 13th |
| 1.2.1981 | 24 h Daytona | 46 | 911 Carrera RSR | Espinosa / DeNarvaez / Cortes | DeNarvaez Ent. | 30th |
| 1.2.1981 | 24 h Daytona | 51 | 935 M16 | Stommelen / Grohs / Meister | Andial Racing/Meister Homes | 24th |
| 1.2.1981 | 24 h Daytona | 52 | 911 | Cripe / Gauthier / Swanson | Beach Ball Racing | 26th |
| 1.2.1981 | 24 h Daytona | 54 | 911 Carrera RSR | Garcia / Naon / Sereix | Montura Racing | 54th |
| 1.2.1981 | 24 h Daytona | 56 | 911 Carrera | Borlase / Hammond / Kravig | Rick Borlase | DNA |
| 1.2.1981 | 24 h Daytona | 57 | 914/6 | Scott / Goodell / Bruckmann | Personalized Autohaus | 35th |
| 1.2.1981 | 24 h Daytona | 58 | 911 Carrera RSR | Smith / Kendall / Earle | Charles Kendall | 12th |
| 1.2.1981 | 24 h Daytona | 62 | 911 SC | Koll / Kline / McFarlin | Kegel Enterprises | 3rd |
| 1.2.1981 | 24 h Daytona | 84 | 935 M16 | "Jamsal" / Barrientos / Gonzalez | Scorpio Racing Team | 8th |
| 1.2.1981 | 24 h Daytona | 85 | 935/77A | Leven / Haywood / Barth | Bayside Disposal Racing | DNA |
| 1.2.1981 | 24 h Daytona | 86 | 935/80 | Haywood / Barth / Leven | Bayside Disposal/Brumos Racing | 42nd |
| 1.2.1981 | 24 h Daytona | 87 | 911 Carrera RSR | Stone | Bob Beasley | 62nd |
| 1.2.1981 | 24 h Daytona | 89 | 911 S | Bitterauf / Moxley / Leo | Klaus Bitterauf | DNS |
| 1.2.1981 | 24 h Daytona | 90 | 935 K3 | Woods / Kent-Cooke / Redman | Woods-Cooke Racing/Style Auto | DNA |
| 1.2.1981 | 24 h Daytona | 91 | 911 Carrera RSR | Schramm / Frank | Framm Promotions | DNA |
| 1.2.1981 | 24 h Daytona | 93 | 935/79 | Whittington / Whittington / Whittington | Whittington Brothers Racing | DNA |
| 1.2.1981 | 24 h Daytona | 94 | 935 K3 | Whittington / Whittington / Whittington | Whittington Brothers | 57th |
| 21.3.1981 | 12 h Sebring | 1 | 935 K3/80 | Fitzpatrick / Busby | John Fitzpatrick Racing | 41st |
| 21.3.1981 | 12 h Sebring | 2 | 935 K3 | Hinze / Minter / Whittington | Marty Hinze Racing | 3rd |
| 21.3.1981 | 12 h Sebring | 3 | 935 M16 | Meister / Stommelen / Grohs | Andial/Meister Racing | 4th |
| 21.3.1981 | 12 h Sebring | 8 | 935 JLP-3 | Paul / Paul, Jr. | JLP Racing | 66th |
| 21.3.1981 | 12 h Sebring | 23 | 911 Carrera RSR | Selby / Roe | Roe/Selby Racing | 7th |
| 21.3.1981 | 12 h Sebring | 30 | 935 J | Moretti / Mendez / DeNarvaez | Momo/Penthouse | 6th |
| 21.3.1981 | 12 h Sebring | 58 | 911 Carrera RSR | Kendall / Smith / Aase | Charles Kendall | 5th |
| 21.3.1981 | 12 h Sebring | 86 | 935/80 | Haywood / Holbert / Leven | Bayside Disposal Racing | 1st |
| 21.3.1981 | 12 h Sebring | 90 | 935 K3 | Woods / Kent-Cooke / McKitterick | Cooke Woods Racing/Garretson Enterprises | 2nd |
| 1981 | Estoril | 48 | 935 Aurora | Joaquim Moutinho | | 10th |
| 1981 | Costa Verde | 87 | 935 A4 | Robert Giannone | | 1st |
| 1981 | Vila do Conde | 87 | 935 Aurora | Ruffino Fontes | Maconde | 2nd |
| 1981 | Costa Verde | 88 | 935 K2 | Jorge Petiz | | 3rd |
| 1981 | Vila do Conde | 88 | 935 A4 | Robert Giannone | Robert Giannone | 1st |
| 1981 | Costa Verde | 89 | 935 Aurora | Joaquim Moutinho | | 2nd |
| 1981 | Vila do Conde | 89 | 935 K2 | Jorge Petiz | Venancio-Ponto Verde | 3rd |
| 1981 | Estoril | 135 | 935 Aurora | Ruffino Fontes | Maconde | 1st |
| 1981 | Estoril | 140 | 911 | Américo Nunes | Américo Nunes | 5th |
| 1981 | US Champions Road Atlanta [ASR] | | 911 SC | Mike Schaefer | | DNS |
| 1981 | Estoril | | 935 | Robert Giannone | Robert Giannone | 2nd |