Mirador de la Fillola Quatre Hores

Mirador de la Fillola Quatre Hores is a viewpoint inside the protected Llobregat Delta natural reserve, right by el Prat de Llobregat just outside Barcelona. It is one of several lookout points scattered across this flat wetland at the mouth of the Llobregat river, sitting almost next door to Barcelona-El Prat airport.

How do you get there?

The starting point for this stretch of the delta is the Cal Tet car park on Camí Reial de València in el Prat de Llobregat, where parking costs 8 €. From there a signposted circular route runs through a string of viewpoints, including Mirador de Cal Lluquer, Mirador de la Desembocadura, Mirador de Cal Beitas, and Mirador de la Fillola Quatre Hores itself. Two options are available: a shorter loop of around 6 kilometres and a longer one of about 12 kilometres, both taking roughly 3 hours to walk in total.

The ground is exceptionally flat — the whole route has an elevation change of only 11 metres, sitting between -2 and 8 metres above sea level. That makes it an easy walk suitable for most visitors, families included. Route guides recommend Nordic walking poles, which help on the soft, occasionally sandy delta terrain.

What will you see?

Like the other viewpoints along the trail, Mirador de la Fillola Quatre Hores looks out over a classic delta landscape — a patchwork of scrub, channels and wet meadows that make up one of the most valuable natural areas around Barcelona. Bring binoculars if you can: the dense network of miradors in this part of the delta, including the tellingly named Mirador dels Avions ("planes viewpoint"), points to this being a popular spot for birdwatchers. The closeness of Barcelona-El Prat airport means planes pass low overhead on a regular basis, which is part of the area's particular character — wetland nature and airport infrastructure sit side by side here.

The viewpoint itself is a simple platform or raised spot offering views over the surrounding marshland and greenery. It works best as a stop along a longer walk rather than a destination in its own right — its appeal comes from its place on a route that strings several lookout points together.

When should you visit?

Because the delta is flat and largely exposed, it is worth avoiding the hottest hours of a summer day — early morning or late afternoon walks are more comfortable and give better odds of spotting birds, which tend to be more active outside the midday heat. Most of the route offers little shade, so a hat, water and sunscreen are worth packing in summer.

Frequently Asked Questions

Where does the route to Mirador de la Fillola Quatre Hores start? The most convenient starting point is the Cal Tet car park on Camí Reial de València in el Prat de Llobregat, from where a signposted loop trail runs past several delta viewpoints.

How long is the route and how much time does it take? There are two options — a shorter loop of about 6 km and a longer one of about 12 km — with the full walk taking roughly 3 hours.

Is the walk difficult? No, the terrain is almost completely flat, with an elevation change of just 11 metres, so it is rated as an easy walk suitable for most visitors.

What should you bring? Binoculars for birdwatching, water, sun protection, and — for the longer option — Nordic walking poles, which make walking on the soft delta ground easier.