June 25th

Penn House Grand Prix is a gravity powered time-trial for karts, sidecars and bikes

The course is a kilometre of perfectly smooth private driveway that snakes through a private woodland in Penn Street, Buckinghamshire.

Earl and Countess Howe kindly allowed this event to take place at Penn House, their family home. 

 For entry details

See a practice run on YouTube

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The Penn House Estate is near Amersham, Buckinghamshire, within easy reach of both the M40 & M25.

The entrance to the course is at the junction of Horsemoor Lane HP7 0PL and Gravelly way.

The course winds its way through beautiful woodlands.

The most amazing bit is that the 5th Earl Howe had the corners banked to race his Bugatti along it! 

There is a great high speed dip, some nice sweeping bends and some testing gentle sections too.

Karts go down the hill one at a time racing against the clock.  Bikes go two at a time. We aim to give each entry three runs.

The same kart or bike can be entered twice if you have two drivers so you can build with a friend and both have a proper go.

Each entry is £35 for karts and £20 for bikes.

Contact the organisers email above for a detailed racers pack with all the rules, and specifications. If you already have a kart or bike, we will be pretty flexible as long as in our opinion it is safe.

If you are building something new we suggest you use the specifications for our ‘streamliner’ or ‘roadster’ class that are common to other events.

You can also find a lot of other information here