The present operation "La Grande Traversée du Massif Central à MTB. Anchoring and developing mythical roaming — Promotion and communication actions" carried out by CRT Occitanie, is an integral part of the overall operation described above. This second PAA is the continuation and development of actions carried out in 2017-2019 on the 1st APP “Relaunch of mythical roaming!” which gave the itinerary a website, communication tools, first digital communications, and enhancement events of the GTMC. The CRT Occitanie takes the follow-up of Auvergne-Rhône-Alpes Tourisme with the agreement of the leader IPAMAC and with the agreement and financial participation of the CRT Auvergne-Rhône-Alpes and Bourgogne-Franche-Comté, of the project manager of the Promotion and Communication section of the Grande Traversée du Massif central à VTT. Of all the actions to be carried out, six specific actions, described above, are the subject of this grant application.