The entry list for the Total 24 Hours of Spa has been released, the blue riband event of the Blancpain GT Series, which will feature 65 cars and factory involvement from several manufacturers.

The Pro Cup is once again the biggest class of the field and welcomes 29 entries, with Audi, Mercedes, McLaren, Bentley, Nissan and BMW all involved with some kind of factory effort.

ENTRY LIST: Total 24H Spa

The Audi contingent is led by Belgian Audi Club Team WRT (five cars) and Phoenix Racing, with both teams fielding a factory car each for Laurens Vanthoor, Rast and Mueller (WRT) and Christopher Mies, Frank Stippler and Marcus Winkelhock (Phoenix).

Following a dominant showing at the Nürburgring, Mercedes-AMG is also supporting five of its GT3 cars in the Belgian Ardennes, featuring all-star lineups with Black Falcon, HTP Motorsport and AKKA-ASP.

As announced yesterday, Garage 59 has added an additional McLaren 650S GT3 for Pipo Derani, Bruno Senna and Duncan Tappy to boost it’s chances, while BMW (ROWE Racing) and Bentley only have two cars entered.

Lamborghini is represented by Grasser Racing Team (two cars) and Attempto Racing in the top class, with most eyes on the No. 16 Lamborghini Huracán GT3 of Jeroen Bleekemolen, Mirko Bortolotti and Rolf Ineichen.

AF Corse only has one new Ferrari 488 GT3 entered, the No. 50 car of Alessandro Pier Guidi, Michele Rugolo and Pasin Lathouras that almost took a surprise win in the Paul Ricard 1000km last time out.

The same can be said about Nissan, which has all hopes vested on the No. 23 RJN Nissan GT-R GT3 NISMO of Alex Buncombe, Lucas Ordonez and Mitsunori Takaboshi in the Pro class.

Emil Frey Racing has two of its self-developed Jaguar G3s on the entry list, with defending champion Markus Palttala set to take the wheel of a brand new second chassis with Christian Klien and Jonathan Hirschi.

The Pro Am Cup welcomes 25 GT3 cars, featuring a couple of one-off entries and factory drivers joining the field.

Lago Racing will field a Lamborghini Gallardo R-EX supported by Reiter Engineering, Easy Race joins the series with a Ferrari 488 GT3 and Konrad Motorsport returns with a Lamborghini, along with a third GRT entry.

The list of factory drivers in the Pro Am Cup includes names as Oliver Gavin (Barwell), Kevin Estre (Attempto), Patrick Pilet (IMSA Performance), Giancarlo Fisichella (AF Corse), Darren Turner and Jonny Adam (Oman Racing), Marc Basseng (Konrad), Marco Bonanomi (Sainteloc) and Martin Tomczyk (ROAL).

There’s also a relatively small Am Cup contingent consisting of only nine cars, while the Cup class has two Porsche 991 GT3 Cup cars in it.

The event also doubles as the second round of the Intercontinental GT Challenge, which will see a total of 11 entries spread between four manufacturers.