On the Ernest Lluch-bound journey, this bus initially follows a route parallel to the sea along Passeig Marítim and Passeig de Colom. Once at Drassanes, it goes along Paral·lel, to Plaça Espanya and Carrer de Sants. At the end of the route, it goes along Travessera de les Corts, Avinguda Sant Ramon Nonat and Avinguda Cardenal Reig and finishes next to the Ernest Lluch Trambaix stop (between Carrer Collblanc and Avinguda de Xile). On the Passeig Marítim-bound journey, it goes along Carrer Collblanc to Carrer de Sants. The rest of the route is the same as the journey in the opposite direction.
The route goes through five interchange hubs: