EN1-SL01 is a first class national road on the island of Sal, Cape Verde.

It runs from Espargos to Santa Maria.

[1] It is Sal's only dual carriageway.

[2] In Espargos it is connected with EN1-SL-02 to Palmeira and EN3-SL-02 to Pedra de Lume.

In Santa Maria it is connected with EN3-SL-01 to Ponta do Sinó.