Famous cars such as the first 1947 Land Rover prototype, the classic Range Rover and the brand’s current range will make their way up the hill as part of a series of events to mark the birthday.
Celebrations kicked off in April with a special event live streamed around the world, culminate in the new Defender being revealed next year, after years of fierce speculation and prototype sightings.
Land Rover is also overhauling its UK production strategy in preparation for a new generation of models, including its best seller - the Evoque - due to be revealed in the coming months after first going on sale in 2011.
The company's classics division, meanwhile, has worked on restoring a long-lost Land Rover launch car, discovered in a field in Wales last year. The Jaguar Land Rover Classic Works team has already carried out 25 restorations on Series 1 Land Rovers, costing between £60,000 and £80,000 apiece.
The Duke of Richmond, who puts on the festival every year, said: “It’s a great occasion for us to be able to bring two iconic British institutions together in anniversary years. We’re honoured to be able to host the Land Rover 70th parade up the hill for our silver jubilee.”
Despite Land Rover's 70th being one focal point of the event, it's Porsche that the central artwork, created by Gerry Judah, will be dedicated to. The Stuttgart brand also turns 70 this year.