Ask Barcelona residents where they go for their Sunday morning run or family walk with a view, and many will say the same place: the Carretera de les Aigües. This unpaved road runs along the Collserola ridge above the city, offering continuous panoramic views over Barcelona, the sea, and the delta — a 5-kilometre trail that feels a world away from the urban density below.
A Victorian Water Supply Route
The road was originally constructed in the 19th century to carry water from the Collserola springs down to the growing city below. The infrastructure is long gone, but the levelled trail it left behind has become one of the most popular outdoor spaces in Barcelona for running, cycling, and walking. The surface is packed earth and gravel — comfortable for trainers, mountain bikes, and most prams.
The Experience
The trail runs along the eastern face of the Collserola ridge at roughly 400 metres elevation, with the city spread out below. In clear weather, the views take in the Eixample grid, the Sagrada Família, Montjuïc, the port, and the sea. In spring, the surrounding scrubland is fragrant with rosemary and wild herbs. Benches at intervals make it easy to stop and take in the panorama.
Getting There
The most convenient access is via the FGC train to Peu del Funicular, then the Vallvidrera funicular to the top. You can also walk up from various points in the Sarrià-Sant Gervasi district. The route is free and open year-round; mornings and weekday afternoons are quieter than weekend mornings when locals exercise.