2018 California 8 Hours
The 2018 WeatherTech Raceway California 8 Hours was the second edition of the WeatherTech Raceway California 8 Hours race held on WeatherTech Raceway Laguna Seca on 28 October 2018. The race was contested with GT3-spec cars, GT Cup-spec cars, GT4-spec cars, MARC cars and TCR-touring cars. The race was organized by the Stéphane Ratel Organisation.
The second annual California 8 Hours is the fourth and final round of the 2018 Intercontinental GT Challenge.
Entries
GT3/GT Cup
GT4
TCR
Official results
Bold denotes category winner. Results validated on 26 June 2019 following an FIA-related hearing.| Class | Team/Entrant | Drivers | Car | Laps | ||
| 1 | GT3 Pro | 29 |  Audi Sport Team Land | Christopher Haase Kelvin van der Linde Christopher Mies | Audi R8 LMS | 306 |
| 2 | GT3 Pro | 19 |  Audi Sport Team WRT |  Robin Frijns Dries Vanthoor Markus Winkelhock | Audi R8 LMS | 306 |
| 3 | GT3 Pro | 175 |  Mercedes-AMG Team SunEnergy1 Racing | Maximilian Buhk Maro Engel Tristan Vautier | Mercedes-AMG GT3 | 306 |
| 4 | GT3 Pro | 911 | Wright Motorsport | Romain Dumas Frédéric Makowiecki Dirk Werner | Porsche 911 GT3 R | 306 |
| 5 | GT3 Pro | 17 | Audi Sport Team WRT |  Stuart Leonard Sheldon van der Linde Alex Riberas | Audi R8 LMS | 306 |
| 6 | GT3 Pro | 8 | Bentley Team M-Sport |  Vincent Abril Andy Soucek Maxime Soulet | Bentley Continental GT3 | 305 |
| 7 | GT3 Pro | 43 | Mercedes-AMG Team Strakka Racing | Maximilian Götz Raffaele Marciello Lewis Williamson | Mercedes-AMG GT3 | 304 |
| 8 | GT3 Pro | 44 | Strakka Racing | Jack Hawksworth Adrien Tambay Christian Vietoris | Mercedes-AMG GT3 | 303 |
| 9 | GT3 Pro | 54 | Black Swan Racing | Jeroen Bleekemolen Patrick Long Tim Pappas | Porsche 911 GT3 R | 303 |
| 10 | GT3 Pro | 9 | K-PAX Racing |  Rodrigo Baptista Álvaro Parente Bryan Sellers | Bentley Continental GT3 | 302 |
| 11 | GT3 | 7 | Bentley Team M-Sport | Jules Gounon Steven Kane Jordan Pepper | Bentley Continental GT3 | 297 |
| 12 | GT3 Pro-Am | 2 | DXDT Racing | David Askew Ryan Dalziel Mike Hedlund | Mercedes-AMG GT3 | 296 |
| 13 | GTC | 6 | US RaceTronics | Steven Aghakhani Richard Antinucci Taylor Proto | Lamborghini Huracán Super Tropheo Evo | 291 |
| 14 | GT3 Pro-Am | 46 | PPM | Steven Dunn Brandon Gdovic Shinya Michimi | Lamborghini Huracán GT3 | 283 |
| 15 | GT4 | 626 | Rearden Racing | Jeff Kearl Vesko Kozarov Lara Tallman | Audi R8 LMS GT4 | 281 |
| 16 | GT4 | 66 | TRG | Derek DeBoer Sean Gibbons Spencer Pumpelly | Porsche Cayman GT4 Clubsport MR | 280 |
| 17 | GT4 | 65 | Murillo Racing | Jeff Mosing Justin Piscitell Tim Probert | Mercedes-AMG GT4 | 280 |
| 18 | GT4 | 12 | Ian Lacy Racing | Frank Gannett Ian Lacy Drew Staveley | Ginetta G55 GT4 | 280 |
| 19 | GT4 | 88 | Stephen Cameron Racing | Gregory Liefooghe Sean Quinlan Henry Schmitt | BMW M4 GT4 | 278 |
| 20 | TCR | 98 | Bryan Herta Autosport with Curb-Agajanian | Bryan Herta Colton Herta George Kurtz | Hyundai i30 N TCR | 276 |
| 21 | GT4 | 91 | Rearden Racing | James Burke Jeff Burton Jessica Burton | Rudi R8 LMS GT4 | 272 |
| 22 | GT4 | 113 | RHC-Lawrence/Strom | Daren Jorgensen Jon Miller Brett Strom | BMW M4 GT4 | 272 |
| 23 | GT4 | 34 | Murillo Racing | Matt Fassnacht Christian Szymczak | Mercedes-AMG GT4 | 263 |
| 24 | GT4 | 67 | TRG | Chris Bellomo Tom Dyer Robert Orcutt | Porsche Cayman GT4 Clubsport MR | 256 |
| 25 | GT4 | 22 | Automatic Racing | Charles Espenlaub Eric Lux Charles Putnam | Aston Martin V8 Vantage GT4 | 237 |
| 26 | GT3 Pro-Am | 75 | SunEnergy1 Racing |  Mikaël Grenier Kenny Habul Luca Stolz | Mercedes-AMG GT3 | 219 |
| 27 | GT4 | 2 | GMG Racing | Jason Bell Andrew Davis James Sofronas | Audi R8 LMS GT4 | 217 |
| GT4 | 10 | PF Racing | Jade Buford Scott Maxwell James Pesek | Ford Mustang GT4 | 194 | |
| DNF | GT3 Pro | 87 | Vital Speed Motorsport | Trevor Baek Marino Franchitti Jeff Westphal | Ferrari 488 GT3 | 112 |
| DNF | GT4 | 51 | Team Panoz Racing | Preston Calvert Ian James Matt Keegan | Panoz Avezzano GT4 | 81 |
| DNF | TCR | 99 | Bryan Herta Autosport with Curb-Agajanian | Michael Lewis Mark Wilkins Mason Filippi | Hyundai i30 N TCR | 58 |
| GT3 Pro-Am | 33 |  ARC Bratislava |  Konstantīns Calko Miroslav Konôpka Andrzej Lewandowski | BMW M6 GT3 | 0 | |
| DNS | TCR | 23 | M1 GT Racing | Walter Bowlin Jerimy Daniel Lars Viljoen | Audi RS3 LMS TCR | 0 |
| GT3 Pro-Am | 42 | Strakka Racing | Felipe Fraga David Fumanelli Nick Leventis | Mercedes-AMG GT3 | 304 |
NOTE: The No. 42 Strakka Racing Mercedes-AMG GT that had finished eighth overall, and first in GT3 Pro-Am, was disqualified under after driver Nick Leventis was found in violation of FIA doping regulations. Leventis' urine sample was taken to the Sports Medicine Research & Testing Laboratory at the University of Utah in Salt Lake City, Utah, where it tested positive for anastrozole. The results were altered on 26 June 2019 after an official report of the positive test.