From Tréguier, follow the Trégor Côte d'Ajoncs tourist circuit which will take you along the Côte d'Ajoncs between Plougrescant and Penvénan, passing through the famous Gouffre site or Buguélès and Port Blanc. After reaching the town of Penvénan, you will find the main route of La Vélomaritime which guides you to the entrance of Perros-Guirec.