Photographic Post Script
To get great pictures from this event you will need a super zoom lens. Nikon 200-500mm or the Sigma equivalents are recommended as you are some distance from the action. In the paddock area you can drop down to a short tele-photo for shots of the riders as they prepare for the off.
As it can be quite dark this time of year you will need to have a high ISO but going too high can result in grainy images. My usual setting is auto ISO. You should limit the ISO to a level you are happy with and this can be set in the internal menu settings on your camera. However, keep an eye on your exposure meter as you are shooting towards the sea and there is a lot of sky that can fool the readings.
The racing will run even in inclement weather so if you want to protect your kit a weather proof cover for your lens and camera is a must unless you have full pro gear. These can be sourced quite cheaply from online auction shops but a cut down leg from an old pair of waterproof trousers or even a plastic bag will do the job.