Main Race after 2.30 hours Monza 2021 Results
                                    Main Race after 2.30 hours
                                
                                | Pos | Car # | Class | Drivers | Team | Car | Time | Laps | Gap | 
|---|---|---|---|---|---|---|---|---|
| 1 | 54 | Pro Cup | Matteo Cairoli, Klaus Bachler, Christian Engelhart | Dinamic Motorsport | Porsche 911 GT3-R (991.II) | 1:49.791 | 62 | |
| 2 | 88 | Pro Cup | Raffaele Marciello, Daniel Juncadella, Jules Gounon | AKKA ASP | Mercedes-AMG GT3 | 1:49.212 | 62 | 3.835 | 
| 3 | 14 | Silver Cup | Alex Fontana, Rolf Ineichen, Ricardo Feller | Emil Frey Racing | Lamborghini Huracan GT3 Evo | 1:49.604 | 62 | 4.564 | 
| 4 | 71 | Pro Cup | Antonio Fuoco, Callum Ilott, Davide Rigon | Iron Lynx | Ferrari 488 GT3 | 1:49.284 | 62 | 6.949 | 
| 5 | 51 | Pro Cup | Alessandro Pier Guidi, Nicklas Nielsen, Come Ledogar | Iron Lynx | Ferrari 488 GT3 | 1:49.358 | 62 | 7.398 | 
| 6 | 30 | Silver Cup | James Pull, Stuart Hall, Benjamin Goethe | Team WRT | Audi R8 LMS GT3 | 1:50.358 | 62 | 11.297 | 
| 7 | 57 | Silver Cup | Russel Ward, Mikael Grenier, Philip Ellis | Winward Racing | Mercedes-AMG GT3 | 1:50.677 | 62 | 13.684 | 
| 8 | 26 | Pro Cup | Markus Winkelhock, Finlay Hutchison, Frederic Vervisch | Sainteloc Racing | Audi R8 LMS GT3 | 1:50.045 | 62 | 15.121 | 
| 9 | 87 | Silver Cup | Simon Gachet, Konstantin Tereschenko, Thomas Drouet | AKKA ASP | Mercedes-AMG GT3 | 1:49.730 | 62 | 18.603 | 
| 10 | 56 | Pro Cup | Andrea Rizzoli, Mikkel O. Pedersen, Romain Dumas | Dinamic Motorsport | Porsche 911 GT3-R (991.II) | 1:50.352 | 62 | 19.178 | 
| 11 | 31 | Silver Cup | Ryuichiro Tomita, Frank Bird, Valdemar Eriksen | Team WRT | Audi R8 LMS GT3 | 1:50.099 | 62 | 19.724 | 
| 12 | 33 | Silver Cup | Benjamin Hites, Patrick Kujala | Rinaldi Racing | Ferrari 488 GT3 | 1:50.608 | 62 | 23.914 | 
| 13 | 7 | Silver Cup | Oscar Tunjo, Paul Petit, Marvin Dienst | Toksport | Mercedes-AMG GT3 | 1:50.005 | 62 | 30.104 | 
| 14 | 188 | Pro-AM Cup | Alexander West, Chris Goodwin, Jonny Adam | Garage 59 | Aston Martin Vantage AMR GT3 | 1:51.612 | 62 | 30.536 | 
| 15 | 66 | Pro Cup | Mattia Drudi, Christopher Mies, Kim Luis Schramm | Attempto Racing | Audi R8 LMS GT3 | 1:50.298 | 62 | 31.644 | 
| 16 | 19 | Pro-AM Cup | Phil Keen, Hiroshi Hamaguchi | Orange 1 FFF Racing Team | Lamborghini Huracan GT3 Evo | 1:51.814 | 62 | 32.383 | 
| 17 | 77 | Pro-AM Cup | Adrian Amstutz, Miguel Ramos, Henrique Chaves | Barwell Motorsport | Lamborghini Huracan GT3 Evo | 1:51.853 | 62 | 33.481 | 
| 18 | 5 | Silver Cup | Hubert Haupt, Patrick Assenheimer, Ricardo Sanchez | HRT | Mercedes-AMG GT3 | 1:50.364 | 62 | 33.987 | 
| 19 | 99 | Silver Cup | Dennis Marschall, Alex Aka, Tommaso Mosca | Attempto Racing | Audi R8 LMS GT3 | 1:50.462 | 62 | 34.437 | 
| 20 | 4 | Pro Cup | Maro Engel, Luca Stolz, Vincent Abril | HRT | Mercedes-AMG GT3 | 1:49.622 | 62 | 34.615 | 
| 21 | 40 | Silver Cup | Yannick Mettler, Jordan Love, Miklas Born | SPS automotive performance | Mercedes-AMG GT3 | 1:51.900 | 62 | 37.426 | 
| 22 | 159 | Silver Cup | Nicolai Kjaergaard, Alex MacDowall, Valentin Hasse Clot | Garage 59 | Aston Martin Vantage AMR GT3 | 1:50.578 | 62 | 42.880 | 
| 23 | 163 | Pro Cup | Giacomo Altoe, Norbert Siedler, Albert Costa | Emil Frey Racing | Lamborghini Huracan GT3 Evo | 1:49.395 | 61 | 6.059 | 
| 24 | 2 | Pro-AM Cup | Nico Bastian, Olivier Grotz, Florian Scholze | GetSpeed | Mercedes-AMG GT3 | 1:51.164 | 61 | 8.851 | 
| 25 | 16 | Silver Cup | Clemens Schmid, Tim Zimmermann, Kikko Galbiati | GRT Grasser Racing Team | Lamborghini Huracan GT3 Evo | 1:50.600 | 61 | 14.840 | 
| 26 | 63 | Pro Cup | Mirko Bortolotti, Marco Mapelli, Andrea Caldarelli | Orange 1 FFF Racing Team | Lamborghini Huracan GT3 Evo | 1:48.961 | 61 | 16.031 | 
| 27 | 34 | Pro Cup | Sheldon van der Linde, Marco Wittmann, David Pittard | Walkenhorst Motorsport | BMW M6 GT3 | 1:49.677 | 61 | 20.232 | 
| 28 | 52 | Pro-AM Cup | Lorenzo Bontempelli, Louis Machiels, Andrea Bertolini | AF Corse | Ferrari 488 GT3 | 1:51.010 | 61 | 26.090 | 
| 29 | 20 | Pro-AM Cup | Dominik Baumann, Valentin Pierburg | SPS automotive performance | Mercedes-AMG GT3 | 1:50.880 | 61 | 29.515 | 
| 30 | 93 | Pro-AM Cup | Chris Froggatt, Stefan Görig, Edward Cheever | SKY - Tempesta Racing | Ferrari 488 GT3 | 1:51.349 | 61 | 36.280 | 
| 31 | 107 | Pro-AM Cup | Gilles Vannelet, Stuart White, Nelson Panciatici | CMR | Bentley Continental GT3 | 1:50.020 | 60 | 24.244 | 
| 32 | 35 | Pro Cup | Timo Glock, Martin Tomczyk, Thomas Neubauer | Walkenhorst Motorsport | BMW M6 GT3 | 1:49.857 | 58 | 21.002 | 
| 33 | 10 | Pro-AM Cup | Karim Ojjeh, Jens Liebhauser, Jens Klingmann | Boutsen Ginion | BMW M6 GT3 | 1:51.505 | 52 | -23:12.316 | 
| 34 | 90 | Silver Cup | Ezequiel Perez Companc, Rik Breukers | Madpanda Motorsport | Mercedes-AMG GT3 | 1:50.257 | 49 | -10:47.702 | 
| 35 | 114 | Pro Cup | Arthur Rougier, Konsta Lappalainen, Jack Aitken | Emil Frey Racing | Lamborghini Huracan GT3 Evo | 1:50.050 | 40 | -47:58.191 | 
| 36 | 32 | Pro Cup | Dries Vanthoor, Kelvin van der Linde, Charles Weerts | Team WRT | Audi R8 LMS GT3 | 1:49.192 | 29 | -1:18:11.113 | 
| 37 | 38 | Pro Cup | Ben Barnicoat, Oliver Wilkinson, Rob Bell | JOTA | McLaren 720S GT3 | 2:00.348 | 29 | -47:54.911 | 
| 38 | 22 | Pro Cup | Matt Campbell, Earl Bamber, Mathieu Jaminet | GPX Martini Racing | Porsche 911 GT3-R (991.II) | 1:49.317 | 26 | -1:21:52.262 | 
| 39 | 11 | Pro-AM Cup | Tim Kohmann, Francesco Zollo, Giorgio Roda | Kessel Racing | Ferrari 488 GT3 | 1:55.022 | 18 | -1:24:05.896 | 
| 40 | 69 | Pro-AM Cup | Rob Collard, Sam de Haan, Callum MacLeod | Ram Racing | Mercedes-AMG GT3 | 1:50.901 | 8 | -2:14:47.429 | 
| 41 | 25 | Pro Cup | Adrien Tambay, Alexandre Cougnaud, Christopher Haase | Sainteloc Racing | Audi R8 LMS GT3 | 2 | -2:16:56.451 | |
| 42 | 70 | Pro-AM Cup | Oliver Millroy, Brendan Iribe | Inception Racing | McLaren 720S GT3 | 1 | -2:27:48.930 |