| 11.5.2013 | 4 h Laguna Seca | 10 | #WP0ZZZ99ZAS798116 | Davis / Avenatti | Dempsey Del Piero Racing | 25th |
| 11.5.2013 | 4 h Laguna Seca | 11 | #WP0ZZZ99ZDS798065 | Hedlund / Heylen | JDX Racing | 24th |
| 11.5.2013 | 4 h Laguna Seca | 22 | #WP0ZZZ99ZBS798073 | MacNeil / Bleekemolen | Alex Job Racing | 22nd |
| 11.5.2013 | 4 h Laguna Seca | 27 | #WP0ZZZ99ZDS798067 | Dempsey / Lally | Dempsey Del Piero Racing | 21st |
| 11.5.2013 | 4 h Laguna Seca | 30 | #WP0ZZZ99ZBS798208 | Cisneros / Tandy | NGT Motorsport | 20th |
| 11.5.2013 | 4 h Laguna Seca | 44 | #WP0ZZZ99ZDS798081 | Ehret / von Moltke | Flying Lizard Motorsports | 30th |
| 11.5.2013 | 4 h Laguna Seca | 45 | #WP0ZZZ99ZDS798064 | Neiman / Pumpelly / Canache | Flying Lizard Motorsports | 28th |
| 11.5.2013 | 4 h Laguna Seca | 66 | #WP0ZZZ99ZDS798066 | Keating / Faulkner | TRG | 23rd |
| 11.5.2013 | 4 h Laguna Seca | 68 | #WP0ZZZ99ZBS798081b | Stanton / Novich | TRG | 27th |
| 11.5.2013 | 4 h Laguna Seca | 99 | #WP0ZZZ99ZCS798079 | Ballou / Wagner | Competiton Motorsports | 31st |
| 19.5.2013 | GTSprint Brno | 51 | #WP0ZZZ99Z8S798279 | Goldstein / de la Reina | Heaven Motorsport | 15th/14th |
| 19.5.2013 | GTSprint Brno | 81 | | Carboni / Cassarà | Petri Corse | DNA |
| 20.5.2013 | 24 h Nürburgring | 27 | | Mapelli / Paletto / Fecchio / Stubber | De Lorenzi Racing | 35th |
| 20.5.2013 | 24 h Nürburgring | 33 | | Sczepansky / Schlichenmeier / "Peter" / Ecke | | 33rd |
| 20.5.2013 | 24 h Nürburgring | 39 | | Moore / Cameron / Bonk | | 24th |
| 20.5.2013 | 24 h Nürburgring | 46 | | "Don Stephano" / Melnikov / Ziegler / Heimrich | | 43rd |
| 20.5.2013 | 24 h Nürburgring | 47 | | Schmidt / Siegler / Zöchling / Koch | | 22nd |
| 20.5.2013 | 24 h Nürburgring | 48 | | Reicher / Ancelet / Dupont / Giavedoni | Roadrunner Racing GmbH | 109th |
| 20.5.2013 | 24 h Nürburgring | 51 | | Negroni / Cremascoli / Colnago / Sapino | Rheydter Club f. Motorsport i. DMV | DNF |
| 20.5.2013 | 24 h Nürburgring | 52 | | Kirchhoff / Edelhoff / Grimm / Kemper | | DNF |
| 20.5.2013 | 24 h Nürburgring | 53 | | Destree / Jodexnis / Pauels / Althoff | | 38th |
| 20.5.2013 | 24 h Nürburgring | 54 | | Kaiser / "Willi" / von Rieff | Black Falcon Team TMD Friction | 31st |
| 20.5.2013 | 24 h Nürburgring | 55 | | Jahn / Jans / Plesse / Rosenberg | Black Falcon Team TMD Friction | 15th |
| 20.5.2013 | 24 h Nürburgring | 77 | | Menten / Landmann / Van Campenhoudt / Forbes | Raceunion Teichmann Racing | 14th |
| 20.5.2013 | 24 h Nürburgring | 88 | | Schmidt / Menzel / Brinkmann / Farnbacher | Haribo Racing Team | DNF |
| 20.5.2013 | 24 h Nürburgring | 103 | | Schmersal / Metzger / "Tiger" / Kemper | | DNS |
| 26.5.2013 | Portuguese GT Estoril | 2 | | Cabral / Moleiro / Cabral | António Cabral | DNF |
| 26.5.2013 | Australian GT Phillip Island | 25 | | Brendon Cook | Walz Group/Surelift Crane Hire | DNF/14th |
| 26.5.2013 | Portuguese GT Estoril | 32 | | Manahu / Castro | Gonçalo Manahu | DNF |
| 26.5.2013 | Portuguese GT Estoril | 33 | | Machado / Baptista / Dias | Joăo Baptista | 6th |
| 1.6.2013 | 2 h Detroit | 18 | #WP0ZZZ99ZBS798072 | Drissi / von Moltke | Mühlner Motorsports America | 18th |
| 1.6.2013 | Britcar GT Rockingham | 24 | | Loggie / Jones | Team Parker | 2nd |
| 1.6.2013 | 2 h Detroit | 44 | #WP0ZZZ99Z9S798076 | Lally / Potter | Magnus Racing | 13th |
| 1.6.2013 | 2 h Detroit | 73 | #WP0ZZZ99ZCS798073 | Lindsey / Long | Park Place Motorsports | 15th |
| 15.6.2013 | 2 h 45 min Mid-Ohio | 18 | #WP0ZZZ99ZBS798072 | von Moltke | Mühlner Motorsports America | 26th |
| 15.6.2013 | 2 h 45 min Mid-Ohio | 44 | #WP0ZZZ99Z9S798076 | Potter / Lally | Magnus Racing | 12th |
| 15.6.2013 | 2 h 45 min Mid-Ohio | 62 | #WP0222992BS798209 | Davis / Snow | Snow Racing/Wright Motorsports | 19th |
| 15.6.2013 | 2 h 45 min Mid-Ohio | 73 | #WP0ZZZ99ZCS798073 | Lindsey / Long | Park Place Motorsports | 14th |
| 16.6.2013 | Italian GT Red Bull Ring | 101 | | Donativi / Gioia | Antonelli Motorsport | 14th/DNF |
| 16.6.2013 | Italian GT Red Bull Ring | 102 | | Marco Magli | Antonelli Motorsport | DNF/11th |
| 16.6.2013 | Italian GT Red Bull Ring | 104 | | Pan / Gardel | Ebimotors | 13th/10th |
| 16.6.2013 | Italian GT Red Bull Ring | 111 | | Bianco / Babini | GDL Racing | 12th/9th |
| 16.6.2013 | Italian GT Red Bull Ring | 132 | | Galbiati / Brambati | Antonelli Motorsport | 15th/DNS |
| 23.6.2013 | Brasil GT Curitiba | 33 | | Fabiano / Melo | Mundo Motorsport | DNS/11th |
| 23.6.2013 | GTSprint Zolder | 51 | | Goldstein / de la Reina | Heaven Motorsport | 17th/19th |
| 23.6.2013 | GTSprint Zolder | 311 | | Lamster / Neyens | Euroseal - EMG Motorsport | 19th/18th |
| 30.6.2013 | Portuguese GT Porto | 6 | | Marreiros / Baptista | Prime Promotion | 7th |
| 30.6.2013 | 6 h Watkins Glen | 18 | #WP0ZZZ99ZBS798072 | Costabal / Salazar | Mühlner Motorsports America | 30th |
| 30.6.2013 | Portuguese GT Porto | 32 | | Manahu / Castro | Fabela Sport | DNF |
| 30.6.2013 | Portuguese GT Porto | 33 | | Machado / Dias / Baptista | Racing 4 Porto | DNF |
| 30.6.2013 | 6 h Watkins Glen | 44 | #WP0ZZZ99Z9S798076 | Potter / Lally / Lietz | Magnus Racing | 16th |
| 30.6.2013 | 6 h Watkins Glen | 62 | #WP0222992BS798209 | Davis | Snow Racing/Wright Motorsports | 33rd |
| 30.6.2013 | 6 h Watkins Glen | 73 | #WP0ZZZ99ZCS798073 | Lindsey / Long / Sellers | Park Place Motorsports | 21st |
| 30.6.2013 | 6 h Watkins Glen | 80 | #WP0ZZZ99Z85798108 | Haacker / Collins | TruSpeed Motorsports | 25th |
| 6.7.2013 | 2 h 45 min Lime Rock | 10 | #WP0ZZZ99ZAS798116 | Davis / Avenatti | Dempsey Racing / Del Piero | DNA |
| 6.7.2013 | 2 h 45 min Lime Rock | 11 | #WP0ZZZ99ZDS798065 | Hedlund / Heylen | JDX Racing | 25th |
| 6.7.2013 | 2 h 45 min Lime Rock | 22 | #WP0ZZZ99ZBS798073 | MacNeil / Bleekemolen | Alex Job Racing | 28th |
| 6.7.2013 | 2 h 45 min Lime Rock | 27 | #WP0ZZZ99ZDS798067 | Dempsey / Lally | Dempsey Del Piero Racing | 30th |
| 6.7.2013 | 2 h 45 min Lime Rock | 30 | #WP0ZZZ99ZBS798208 | Cisneros / Armindo | NGT Motorsport | 31st |
| 6.7.2013 | 2 h 45 min Lime Rock | 44 | #WP0ZZZ99ZDS798081 | Neiman / von Moltke | Flying Lizard Motorsports | 29th |
| 6.7.2013 | 2 h 45 min Lime Rock | 45 | #WP0ZZZ99ZDS798064 | Pumpelly / Canache | Flying Lizard Motorsports | 24th |
| 6.7.2013 | 2 h 45 min Lime Rock | 66 | #WP0ZZZ99ZDS798066 | Keating / Faulkner | TRG | 26th |
| 6.7.2013 | 2 h 45 min Lime Rock | 68 | #WP0ZZZ99ZBS798081b | Ostella / Stanton | TRG | 27th |
| 7.7.2013 | Italian GT Mugello | 101 | | Giondi / Donativi | Antonelli Motorsport | 10th/12th |
| 7.7.2013 | Italian GT Mugello | 102 | | Marco Magli | Antonelli Motorsport | 11th/10th |
| 7.7.2013 | Italian GT Mugello | 104 | | Jacoma / Pan | Ebimotors | 15th/14th |
| 7.7.2013 | Italian GT Mugello | 111 | | Babini / Bianco | GDL Racing | 12th/9th |
| 7.7.2013 | Italian GT Mugello | 112 | | Schiattarella / Quinzio | GDL Racing | 14th/11th |
| 7.7.2013 | Italian GT Mugello | 132 | | Brambati / Galbiati | Antonelli Motorsport | 13th/13th |
| 14.7.2013 | Australian GT Sydney | 25 | | Cook / Kingsley | McElrea Racing | 8th/9th |
| 21.7.2013 | 2 h 45 min Mosport | 11 | #WP0ZZZ99ZDS798065 | Hedlund / Heylen | JDX Racing | 26th |
| 21.7.2013 | 2 h 45 min Mosport | 22 | #WP0ZZZ99ZBS798073 | MacNeil / Bleekemolen | Alex Job Racing | 22nd |
| 21.7.2013 | 2 h 45 min Mosport | 27 | #WP0ZZZ99ZDS798067 | Dempsey / Lally | Dempsey Del Piero Racing | 25th |
| 21.7.2013 | 2 h 45 min Mosport | 30 | #WP0ZZZ99ZBS798208 | Cisneros / Edwards | NGT Motorsport | 27th |
| 21.7.2013 | 2 h 45 min Mosport | 44 | #WP0ZZZ99ZDS798081 | Neiman / von Moltke | Flying Lizard Motorsports | 28th |
| 21.7.2013 | 2 h 45 min Mosport | 45 | #WP0ZZZ99ZDS798064 | Canache / Pumpelly | Flying Lizard Motorsports | 23rd |
| 21.7.2013 | 2 h 45 min Mosport | 66 | #WP0ZZZ99ZDS798066 | Keating / Faulkner | TRG | 30th |
| 21.7.2013 | 2 h 45 min Mosport | 68 | #WP0ZZZ99ZBS798081b | Popow / Dalziel | TRG | 24th |
| 21.7.2013 | Italian GT Imola | 101 | | Macchiavelli / Donativi | Antonelli Motorsport | 10th/15th |
| 21.7.2013 | Italian GT Imola | 102 | | Marco Magli | Antonelli Motorsport | 15th/10th |
| 21.7.2013 | Italian GT Imola | 104 | | Jacoma / Pan | Ebimotors | 11th/14th |
| 21.7.2013 | Italian GT Imola | 111 | | Bianco / Babini | GDL Racing | 8th/12th |
| 21.7.2013 | Italian GT Imola | 112 | | Enrico Quinzio | Heaven Motorsport srl | DNS |
| 21.7.2013 | Italian GT Imola | 132 | | Rangoni / Galbiati | Antonelli Motorsport | 9th/11th |
| 26.7.2013 | 3 h Indianapolis | 18 | #WP0ZZZ99ZBS798072 | Costabal / Salazar | Muehlner Motorsports America | 34th |
| 26.7.2013 | 3 h Indianapolis | 44 | #WP0ZZZ99Z9S798076 | Potter / Lally | Magnus Racing | 16th |
| 26.7.2013 | 3 h Indianapolis | 62 | #WP0222992BS798209 | Snow / Davis | Snow Racing/Wright Motorsports | 20th |
| 26.7.2013 | 3 h Indianapolis | 71 | #WP0ZZZ99ZC5798075 | McCutchen / Hart | Park Place Motorsports | 22nd |
| 26.7.2013 | 3 h Indianapolis | 73 | #WP0ZZZ99ZCS798073 | Lindsey / Long | Park Place Motorsports | 27th |
| 27.7.2013 | Dutch GT Spa | 7 | | Christodoulou / Viebahn | Pro Sport Performance | 14th/12th/5th |
| 27.7.2013 | Dutch GT Spa | 8A | | Koen Wauters | Mext Racing | DNS/5th/DNS |
| 27.7.2013 | Dutch GT Spa | 14 | | Verstraete / Dubois | NSC | DNS/32nd/DNS |
| 27.7.2013 | Dutch GT Spa | 28A | | Van Glabeke / Jonckheere | Curbstone FMA Racing | DNS/7th/DNS |
| 27.7.2013 | Dutch GT Spa | 34 | | Albert / van Hove | Allure Team 2 | DNS |
| 28.7.2013 | Britcar GT Brands Hatch | 24 | | Loggie / Jones | Team Parker | 5th |
| 28.7.2013 | Brasil GT Tarumã | 33 | | Fabiano / Melo | Mundo Motorsport | 10th/11th |
| 28.7.2013 | 24 h Spa | 48 | #WP0ZZZ99ZAS798162 | Rich / Grandjean / Rosenblad / Harkema | Prospeed Competition | 29th |
| 28.7.2013 | 24 h Spa | 94 | #WP0ZZZ99Z6S798133 | Renmans / Gerome / Meulders / Richard | SpeedLover | 33rd |
| 4.8.2013 | Australian GT Queensland | 25 | | Cook / Kingsley | Walz/Surelift Crane Hire | 9th/5th/8th |
| 4.8.2013 | Australian GT Queensland | 26 | | Modystach / Reid | John Reid | 14th/7th/DNS |