His run began at around 6.30am on Saturday 26th May where he beared the Olympic Torch from the Norwegian Church to the Senedd National Assembly building.
Smith commented: "It's a great privilege to be involved. I can't quite believe people have actually turned up, I thought I would be just be carrying it around, waving to the ducks. I'm really excited about the summer of sport we have ahead. It's wonderful."
Watch the BBC News report of Matt Smith's run with the Olympic Flame: