One of the cyclists on my brother's ride last month has posted some photos on the following sites. It looks like they had good weather most of the time and lots of fun. I'm jealous I couldn't make it. http://paristogeneva.weebly.com/
My brother Mike's the bearded grey haired chap, frequently seen posing amusingly by road signs ("Mens" is my favourite one in the 2nd set!). Eurostar managed to buckle his back wheel on the way over so he had to ride a hybrid on the first day till Discover Adventure replaced it for him.
This week I've only ridden 32 miles, 1 commute and a short ride yesterday.