Trélevern is situated near Perros-Guirec... Trélévern Bretagne Position: Seaside Directions: From Paris follow le Mans, Rennes, Saint Brieuc Lannion, Direction Perros Guirec . Don't enter Perros Guirec, take Louannec then Trélévern From le Caen follow la Route des Estuaires. Avranche, Dinan, St Brieuc, Lannion, Direction Perros Guirec . Don't enter Perros Guirec, take Louannec then Trélévern Trélévern is at the level of the twinkling arrow.