More than 400 vehicles will take on a 100-year-old charity hill climb at the weekend, with something “extra special” planned at this year’s event.

The annual Kop Hill Climb returns to Princes Risborough after a record year last year, raising £75,000 for charity and drawing in crowds of around 16,500, with a 60s theme for those who fancy dressing up.

Now in its eighth year, organisers hope the spectacular event will be bigger and better than ever, with a special surprise to be unveiled during the lunch break at 1pm where visitors will “experience a celebration” of the 60s mods and rockers culture, and watch children from Princes Risborough School attempt to conquer the hill on foot.

Spokesman Sara Beaumont said: “This is not just a static display, but also a recreation of Kop Hill’s glorious past.

“Both days will have morning and afternoon sessions where you can see the cars and motorcycles storming the hill – moving history right before your eyes, especially from one of the grandstands, which gives a unique vantage point.”

The vehicles range from the early 1900 to modern day “exotics”, and budding young racers can take part in the “nail-biting” soapbox challenge where teams of racers aged between 10 and 17 try to go the greatest distance down a purpose-built ramp and through obstacles to try and win the Beaumont Cup, with BBC sports presenter Mike Bushell commentating.

Those wanting a break will be able to relax in the food court while taking in the sounds of the purpose-built stage with a line-up of musical talent including the Halton Military Wives Choir, Rockin Rebels, The Loops, G-Elvis, Sound Force Big Band, while home-grown talent Bustin’ Loose will close the show each day.

Kop Hill is reportedly one of the oldest hill climb venues in England and the climb was originally one of seven throughout the Chilterns, with someone of the earliest races recorded in 1910.

It has seen a number of famous faces go up the hill, including Malcolm Campbell, Raymond Mays, Henry Segrave, Count Zborowski and Archie Frazer Nash.

Spectator gates open at 9.00 am each day and the climb runs from 9.45am to 1.00pm and 2.00pm to 5.15pm each day.

Ticket prices start from £10 for adults and £5 for children. Grandstand tickets cost £5 per half-day session in addition to the entry ticket. Under-fives go free.

For more information or to buy tickets, go to www.kophillclimb.org.uk.