Cycling the seafront
You can go approx 3 km in either direction along the seafront from Duquesa.
Going left, towards Sabanillas you can get up to where a bridge was washed away. This is planned to be replaced, which will then enable another 2 km in that direction.
Gping right, towards Castillo, the path becomes gravel part way along. If you are ok with gravel then keep going until you get to the end of the path. There you will find one of the nicest Chiringuitos (beach bars), a very quaibt old place.