Yes, you will need a car to get to Locquirec and around the area. We recommend carpooling where possible

One option is to fly to Paris-CDG and take the train to Morlaix. Then it is about a 30-minute drive to Locquirec (via rental car). Another option is to fly to Brest and then drive about 1 h to Locquirec. Train tickets can be booked here: https://www.raileurope.com/en

By car + overnight ferry: either Portsmouth to St Malo (2.5 h drive to Locquirec) or Plymouth to Roscoff (1 h drive to Locquirec). By plane: look for flights to Brest (1 h drive to Locquirec), Rennes (2 h drive), or Quimper (1.5 h drive). By train: Eurostar to Paris or Lille then TGV to Morlaix, then rent a car in Morlaix (30 min drive to Loquirec). Requires changing train station if you go through Paris