William, John thanks for your replies. The image below is a potential viewing point. You need to imagine that it will be filled with a couple of thousand people! Local cyclists do you use it reguarly at weekends so there would be opportunities to do some practice shots. The Canon G2 has a continuous rate of 1.5fps. Would you use JPEG rather than Raw to take the images?
I think that using RAW could be an issue with the G2 as it takes a few secs to process and taking another shot quickly is not possible.
The image was taken with the Canon G2 and from this range the cyclists will be tiny! I think the chance of getting roadside will be pretty difficult.
Cheers for now
Gary