The leafy 2km cycle path that separates the Greco-Roman ruins of Empúries from the fine beaches north of L'Escala can get pretty busy in the summer. You'll find yourself weaving around pedestrians, but the mildly undulating ride is both fun and scenic.
A segregated and fairly safe cycle path runs along the seafront from Riells into the centre of L'Escala. Unfortunately, it doesn't link up with the Empúries path and you'll need to navigate the town's one way system to transfer from one to the other.