heres the info from TKthe mic 
we open registration at 10 ish and we close at 12.30 on the dot   Race fees are £2.50
directions to track - or there abouts  

heres a link to streetmap showing the turning you need off the A28 -- the sycamor
straight up that road you'll see a kids playground & the track is behind that 
once you get to the playground follow the track around to the left and toward the football fields
then you find it goes sharp right and your there 
streetmap link for Hersden near Canterbury
streetmap link - click to viewbest bet to get down there is thro tunnel head east on A2 / M2 
not forgetting to salute Buckmore park as you go by 
at the other end of the M2 you can take either the A2 and then A28 - long winding and thro Canterbury 
or best route is straight on taking the  A299 to Herne Bay turning 
then take effective 3rd exit of the roundabout for the A291 - a nice country drive 
at the other end of A291 you should be at the level crossing and looking at the A28
turn left here and keep going 
you'll see a new build housing area and a mini roundabout - straight over that 
then on the right is a car sales place with a trractor on a pole -- your pretty much there now 
sure others may have better descriptions but that'll get ya started 
for satnav users nearest postcode is     
CT3 4HX