The cars arrived at the Oxfordshire stately home from six start locations across the UK.
The event marked the anniversary of the club’s first run on May 24th 1936, when a total of 31 Bentleys drove from Cranford in Middlesex to the Old Bell at Hurley.
To celebrate the event the priceless collection of cars were given special permission to park together in the Great Courtyard at Blenheim Palace.
The cars on display ranged from the earliest 3 litre cars from the 1920s up to the current models of Bentley Motors.
Paul Spencer, Event Organiser says: "We were thrilled to host one of our 80th anniversary celebrations at Blenheim Palace. The location was ideal for our members driving from all around the country. The Palace itself is an ideal match for the heritage of the cars and has past links with the Club.”
Several of the cars are past Concours winners and there were also a number with a significant race history; whilst others are stars of film and TV, including appearances in Downton Abbey. The Bentley Drivers Club also hosted an information display stand in the East Court.
As part of the celebrations more than 200 members of the Bentley Drivers Club enjoyed lunch in The Orangery alongside His Grace, The Duke of Marlborough. Guests hailed from Germany, Cyprus and the USA as well as the UK.
Home to the Dukes of Marlborough since 1722, and the birthplace of Sir Winston Churchill, Blenheim Palace was designated a UNESCO World Heritage Site in 1987. It is set in over 2,000 acres of ‘Capability’ Brown landscaped parkland.
The Bentley Drivers Club has around 3,800 members worldwide. Anniversary celebrations continue through the summer with Concours in June, the Club's Silverstone Race Day in August and a Gala Dinner in October.