The Granfondo Mont Ventoux belongs to the Grand trophée series. It is a collection of tough bike tours in France that are organized every year. Because of the popularity it is wise to register as soon as possible. The Mont Ventoux version will be organized in 2019 on Saturday, June 1st. It is a tour of 170 km with 4000 altitude climbing meters. It is a tour where you have to train hard for to get to the finish. Look for more info at grandtrophee.fr