Anyone doing this ride? If it suitable cycling weather I'll be riding in from Westbury which will add, t & b, 26mls to the day, as have no car. Will probably need lights as lighting up time is 19:48 to 05:57 that day. Hope to do it in 8hrs. net riding time. Anyone estimate the same time who would like to join for the whole ride, as that way I needn't carry (the extra weight of) a lock?