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/ Source: TODAY
By Ree Hines

A one-on-one day out with dad is always special. But when you normally share dad with five siblings and an adoring public, it's extra special!

On Sunday, Brad Pitt took his youngest son, 7-year-old Knox, out for a day at the races in England.

Brad Pitt Attends The MotoGP British Grand Prix Race At Silverstone Ahead Of The Release Of The Documentary "Hitting The Apex"
NORTHAMPTON, ENGLAND - AUGUST 30: Brad Pitt and his son Knox-Jolie Pitt attend the MotoGP British Grand Prix race at Silverstone ahead of the release of documentary Hitting The Apex. Pitt is presenting the film, which is out in cinemas 2nd September and on DVD 7th September at Silverstone Circuit on August 30, 2015 in Northampton, England (Photo by Mike Marsland/WireImage)Mike Marsland / WireImage

The 51-year-old actor and motorcycle enthusiast shared his passion for bikes with Knox at the MotoGP British Grand Prix.

Brad Pitt Attends The MotoGP British Grand Prix Race At Silverstone Ahead Of The Release Of The Documentary "Hitting The Apex"
NORTHAMPTON, ENGLAND - AUGUST 30: Brad Pitt and his son Knox-Jolie Pitt attend the MotoGP British Grand Prix race at Silverstone ahead of the release of documentary Hitting The Apex. Pitt is presenting the film, which is out in cinemas 2nd September and on DVD 7th September at Silverstone Circuit on August 30, 2015 in Northampton, England (Photo by Mike Marsland/WireImage)Mike Marsland / WireImage

The two watched the action on the track and mingled with some of the racers.

Brad Pitt Attends The MotoGP British Grand Prix Race At Silverstone Ahead Of The Release Of The Documentary "Hitting The Apex"
Brad Pitt and son Knox meet racer Valentino Rossi at the MotoGP British Grand Prix race.Mike Marsland / WireImage

But Pitt and his look-alike son weren't just at the event for fun. It was a working vacation day for the star, who was also on hand to promote a MotoGP documentary about the six fastest racers in the world, "Hitting the Apex."

Pitt narrates the documentary, which opens in the U.K. Sept. 2.

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