Castle and Cal Ganxo
Good choices for families, beginners and a first view of the hills.
Local guide · mountains and nature
Mountains and hiking in Castelldefels and Garraf
From the castle and Cal Ganxo to La Morella, Garraf and Sitges: short walks, mountain crossings and practical safety advice.
The other side of Castelldefels
The other side of Castelldefels
Castelldefels is more than a long beach. The city lies at the entrance to the Garraf massif, a landscape of white limestone, sinkholes, caves, shafts and Mediterranean scrub. Pine trees and the distinctive margalló, or Mediterranean fan palm, grow among the rocks.
From town, walkers can reach the hills around Cal Ganxo, the Vall de la Sentiu and Turó del Fanxó. More ambitious hikers can continue into Garraf Park, descend to the coastal village of Garraf or cross the mountains all the way to Sitges.
The highest point is La Morella, at approximately 594 metres. From its summit, hikers can see the Garraf massif, the Llobregat delta, Castelldefels, Barcelona and the Mediterranean coast.
Choose your route
La Morella
Garraf’s highest point and a major coastal viewpoint.
Garraf or Sitges
Linear routes with practical train returns.
Wildlife and geology
Scrub, fan palms, migrating birds, limestone and shafts.
The best routes around Castelldefels and Garraf
The best routes around Castelldefels and Garraf
Choose according to your time, fitness and transport. For linear crossings, download the track and plan the return before setting out.
01
Families, beginners and limited time
Botanical Trail to Castelldefels Castle
DifficultyEasy
StartCastelldefels town centre
TypeViewpoint walk
The simplest introduction to the hills of Castelldefels. The trail climbs gradually towards the castle and combines vegetation, local history and elevated views.
- The castle gives panoramic views over Castelldefels, the coast and Garraf Park.
- In 2026 it received the Sendero Azul distinction for environmental quality, education and sustainable recreation.
This is not a mountain expedition, but it is an excellent first walk for families. Check the current municipal route before departure.
Route information ↗
02
Families and short nature walks
Short nature trails around Cal Ganxo
Distance1–3 km
DifficultyEasy–moderate
StartCal Ganxo Environmental Centre
Cal Ganxo is the main gateway from Castelldefels into the Garraf landscape. Three interpretive routes explore the immediate surroundings.
- Turó d’en Vinader: about 3 km, focused on local flora, fauna and geology.
- Turó del Fanxó: about 2 km, covering hydrology, coastal views and the Garraf landscape.
- La Guixera: just over 1 km, about the historical relationship between people and the massif.
The routes have panels and signs, but the distances come from municipal descriptions. Confirm the current condition of signs and paths at Cal Ganxo.
Route information ↗
03
Regular walkers
Castelldefels Castle to Bruguers through the Vall de la Sentiu
DistanceApprox. 13 km
AscentApprox. 350 m
Time5–6 h with stops
DifficultyModerate
A circular route on the quieter northern side of Castelldefels, following the Vall de la Sentiu and Riera de Canyars towards the Ermita de Bruguers.
- The return passes rural tracks, old farmhouses, Coll de Santa Maria, Roca Negra and Cal Ganxo.
- Some narrow sections have thorny vegetation, and the descent below Bruguers can be slippery.
Treat it as a route concept: use a current map or GPS track because crossings and signs can change.
Route information ↗
04
A summit without a full-day crossing
La Pleta to La Morella
Official distance3.5 km
Official time2 h 30 min
Park difficultyLow
StartLa Pleta Park Office
The most direct official route to the highest point of the Garraf massif, through the park’s characteristic karst terrain.
- The summit offers wide views in every direction across the white limestone landscape.
- The park recommends proper walking shoes, sufficient water and binoculars.
The roughly one-kilometre section between La Pleta and Pla de Querol follows a surfaced road with traffic and limited visibility; the park recommends doing it by vehicle. La Pleta has free parking and an information office, normally open 08:00–15:00.
Route information ↗
05
Experienced and fit hikers
Castelldefels to Garraf via Cal Ganxo and La Morella
DistanceApprox. 18.2 km
AscentApprox. 600 m
Time4.5–6 h
TypeLinear
One of the finest complete crossings starting in Castelldefels: climb through Cal Ganxo and Turó del Fanxó, continue towards La Morella and descend to Garraf.
- The first major climb above Cal Ganxo is demanding; gradients become gentler before the final descent to the sea.
- Garraf has a beach, marina and railway station, so you can return without retracing the route.
This is based on a community-recorded track rather than one official park itinerary. Download a current GPX and compare it with the official park map.
Route information ↗
06
An easier linear mountain descent
La Pleta to Garraf on the Camí de les Costes
Distance4.5 km
DescentApprox. 360 m
Time2 h 30 min
DifficultyLow
The official Camí de les Costes descends from La Pleta through characteristic Garraf vegetation towards the sea and Garraf village.
- It follows paths, tracks and some road sections, with views over the coast and the village.
- A quarry section shows the contrast between protected landscape and the historic extraction of limestone.
Stay away from quarry edges and cliffs because of rockfall and landslide risks. Plan two cars, a taxi or a train return from Garraf.
Route information ↗
07
A full-day linear hike
Garraf to Sitges on the GR 92
DistanceApprox. 16 km
TimeApprox. 5 h
DifficultyModerate
StartGarraf railway station
A classic walk through the coastal Garraf massif. From Garraf it heads towards Castellet de Garraf and Can Lluçà, crossing scrub, woodland, vineyards and old farmland before Sitges.
- The route passes the former Vallcarca industrial area and climbs to Ermita de la Trinitat, one of the finest viewpoints on this coast.
- It descends towards Port d’Aiguadolç and Sitges, with railway stations at both ends.
There is limited shade and little chance to obtain water after leaving Garraf. Carry everything needed for the complete walk.
Route information ↗
08
Strong hikers wanting a long challenge
Castelldefels to Sitges
DistanceApprox. 20 km
AscentApprox. 660 m
Time5.5–7 h
DifficultyModerate because of length
A point-to-point route starting at Platja de Castelldefels railway station, following the seafront to Port Ginesta and joining the GR 92 towards Sitges.
- It has impressive coastal views but also road crossings, infrastructure, quarries and the industrial landscape around Vallcarca.
- Garraf station provides a useful halfway exit if the full walk is too long.
Take particular care when crossing the coastal road near Port Ginesta. Download a current track and plan an escape option.
Route information ↗Monthly temperatures in Castelldefels
Monthly temperatures in Castelldefels
These historical average daily highs and lows come from observations at Barcelona Airport, about eight kilometres from Castelldefels, between 1992 and 2021. Exposed ridges and La Morella can be cooler and windier; sheltered limestone valleys can become surprisingly hot.
The climate source is a guide, not a forecast. Check the weather and fire risk before a long route.
Route information ↗| Route | Average high | Average low | Hiking conditions |
|---|---|---|---|
| January | 14 °C | 5 °C | Very good; bring a light jacket |
| February | 15 °C | 6 °C | Very good |
| March | 16 °C | 8 °C | Excellent |
| April | 19 °C | 10 °C | Excellent |
| May | 22 °C | 14 °C | Excellent, but midday sun gets stronger |
| June | 26 °C | 18 °C | Good early in the day |
| July | 28 °C | 21 °C | Often too hot for long exposed routes |
| August | 29 °C | 21 °C | Often too hot; high fire risk possible |
| September | 26 °C | 18 °C | Good in the morning; warm at midday |
| October | 22 °C | 14 °C | Excellent |
| November | 18 °C | 9 °C | Excellent |
| December | 15 °C | 6 °C | Very good |
The best time of year for hiking
The best time of year for hiking
The best general hiking period is October to May.
March, April, May, October and November
Usually the most comfortable months, with moderate temperatures, enough daylight and a more colourful landscape than summer.
- Spring is particularly good for Mediterranean plants.
- Late May can already feel hot on exposed limestone slopes.
December, January and February
Winter is also very suitable for hiking, with mild daytime temperatures near the coast.
- Wind can make summits feel considerably colder.
- Carry an extra layer because daylight is shorter.
June and September
Long walks remain possible, but start early.
- Aim to complete exposed climbs before midday.
- Carry more water than you would for a similar route in a shaded mountain area.
July and August
The least suitable months for long interior crossings.
- Heat, pale limestone and scarce water increase the effort.
- Choose a short sunrise walk, the Castle Botanical Trail or a Cal Ganxo route. Avoid full-day crossings during heat alerts.
Other outdoor sports in Garraf
Other outdoor sports in Garraf
The massif also supports cycling, trail running, birdwatching and caving, provided visitors follow park rules.
Mountain biking and gravel
Garraf has many forest tracks and unsurfaced roads, but cycling is not allowed on every path.
- Within the provincial park network, cyclists may use roads, forest tracks and paths wider than three metres.
- Pedestrians have priority and the general maximum cycling speed in parks is 30 km/h.
- The rocky surface calls for suitable tyres and repair equipment.
Road cycling on Rat Penat
The Rat Penat climb near Castelldefels and Port Ginesta is a well-known Catalan coastal challenge.
- About 6 km, 570 metres of ascent and an average gradient close to 9%.
- Some ramps exceed 20%; use suitable gearing and take great care around vehicles.
Trail running
Cal Ganxo, Turó del Fanxó and the GR 92 suit trail running.
- The surface is rocky and uneven, so trail shoes are preferable.
- In summer, run early because of heat, exposure and limited water.
Birdwatching and nature photography
La Morella and Canòpolis are useful viewpoints for migrating birds using rising air currents above the massif.
- Binoculars also help identify distant landmarks from the summits.
- Carry water and sun protection even on short outings.
Caving
The limestone massif contains many caves and shafts, but they should never be entered casually.
- Use only authorised areas with appropriate technical equipment.
- The safest option is an organised, guided activity.
Essential safety advice
Essential safety advice
Garraf does not reach alpine elevations, but it should still be treated as mountain terrain.
- Carry sufficient water: fountains are uncommon and marked points cannot automatically be assumed to provide drinking water.
- Wear shoes with good grip; exposed limestone, loose stones and descents can be slippery.
- Use sun protection throughout the year. Many higher routes have little shade and white rock intensifies heat.
- Stay away from quarry edges, cliffs and natural shafts. Remain on marked paths.
- Before summer outings, check the Pla Alfa fire-warning level and park alerts. Access may be restricted during extreme danger.
- Never light fires or discard cigarettes. For long crossings, download offline maps or GPX and tell someone your route.
Sea and mountains in one destination
Sea and mountains in one destination
Castelldefels’ great attraction is the contrast. You can start the morning beside the Mediterranean, climb through aromatic shrubs and white limestone hills, enjoy panoramic Garraf views and finish in Garraf, Sitges or back on the beach. Whether you want a family walk, a summit, a demanding crossing, a cycling climb or an afternoon of wildlife, the mountains reveal a completely different side of the city.