Then you’ll probably get wet! Unless you wear your rain gear during cycling of course. If you mean by this question; will there still be a cycling tour if it rains? This depends of the intensity of the rain; there are lots of varieties starting with a drizzle to actually a complete cloudburst. You are free to decide to get on your bike or not, but if the tour leader thinks it is too dangerous to go cycling, he or she will let you know.