Enter Sutton Park at Town Gate. Go ahead for 0.5km and park carefully on the side of the road or on the hard standing in front of the Visitor Centre. Registration is in a tent on the grass on your left before the Visitor Centre.
The 'Gates Run' involves visiting all the Entry Gates and returning to the Start. Take a pen and write down the code letter from each gate.
You can cut through the park or go round the outside at any stage.