32
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8
rides
Mountain biking around Alcácer Do Sal (Santiago) offers diverse terrain across riverine, agricultural, and woodland environments. The region features extensive rice fields and cork oak groves, providing varied landscapes for exploration. The Sado Estuary Nature Reserve and the Sado River are central natural features, with the Pego do Altar Dam also contributing to scenic routes. These areas present a mix of flat, open expanses and shaded trails through rolling hills.
Last updated: June 27, 2026
2
riders
32.9km
02:58
510m
510m
Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.
4
riders
35.2km
02:15
190m
190m
Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.

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2
riders
20.0km
01:33
90m
90m
Easy mountain bike ride. Great for any fitness level. Suitable for all skill levels.
2
riders
39.0km
02:49
440m
440m
Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.
1
riders
39.0km
03:05
500m
500m
Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.
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Popular around Alcácer Do Sal (Santiago)
Not far from the parking lot and restaurants.
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The Pego do Altar Dam is located a few kilometres from Alcácer do Sal and was built in 1949 to supply the agricultural area of the Sado River valley and to produce electricity. Today it is very popular with foreigners in their motorhomes and with sports fishing enthusiasts. It is a magical place due to its landscapes, its capacity for leisure activities and its importance in irrigating the fields, where the main irrigated crop is rice. Not far from the Pego do Altar Dam, the village of Santa Susana has a curious feature: some buildings with modernist architecture from the 1940s, which are due to a benefactor of the region, Henrique Louro Fernandes, whose monogram (HF) can be found on some of them. A small church, with two 16th-century panels inside, somewhat deteriorated but magnificent, completes the interesting visit to this place. Recently, the drought that hit this area “uncovered” an old 200-year-old bridge that was submerged by the waters of the dam.
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can't miss it when going up the road. Had my doubts of what they where going on the fields. guess by the painting it is rice
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South of Lisbon, at the mouth of the Rio Sado river, lies the historic town of "Alcácer do Sal". Here, the influence of the Atlantic on the water level of the Sado is still clearly noticeable. There is no sign of mass tourism like in Lisbon. A great place to explore the beaches on the Atlantic, but also cities like Setúbal or Évora.
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The region offers a diverse mix of terrain, from flat, open expanses through vast rice fields and agricultural plains to shaded trails in coniferous woodlands and cork oak groves. You'll also find routes along the Sado River and around the scenic Pego do Altar Dam, providing varied landscapes for your ride.
Yes, there are options for beginners. For example, the Comporta Road Mural loop from Alcácer do Sal is an easy 20.0 km (12.4 miles) trail that takes about 1 hour 33 minutes to complete, leading through agricultural plains and near the Sado River. Most routes in the area are moderate, but easy paths are available.
You can encounter several natural and man-made landmarks. Many routes offer views of the Sado River and the extensive rice fields. The Comporta Road Mural – Pego do Altar Dam loop from Alcácer do Sal passes by the scenic Pego do Altar Dam and its reservoir. Other highlights include the Vale do Gaio Dam and the historic Alcácer do Sal Castle, often visible from viewpoints like the View of Alcácer do Sal.
Yes, many of the mountain bike trails in Alcácer Do Sal (Santiago) are loops. Examples include the Atalaia de Grândola loop from Grândola, the Comporta Road Mural – Pego do Altar Dam loop from Alcácer do Sal, and the Comporta Road Mural loop from Alcácer do Sal.
The region is generally pleasant for cycling for much of the year. Spring and autumn offer mild temperatures, making them ideal for longer rides. Even winter can be suitable, as the climate is generally temperate. Summers can be hot, so early morning or late afternoon rides are recommended during that season.
Mountain bike trails in Alcácer Do Sal (Santiago) vary in length and duration. You can find routes like the easy Comporta Road Mural loop from Alcácer do Sal, which is 20.0 km (12.4 miles) and takes about 1 hour 33 minutes. Longer, moderate routes such as the Atalaia de Grândola loop from Grândola cover around 32.9 km (20.5 miles) and can take nearly 3 hours.
Yes, the Sado Estuary Nature Reserve, which is part of the broader region, is a significant wetland zone for birdwatching. While mountain biking, especially near the Sado River and its estuary, you might spot various bird species, including flamingos and storks. The estuary is also famously home to a resident pod of dolphins, though these are typically seen on boat tours rather than from bike trails.
The elevation changes vary depending on the route. Many trails through the rice fields and agricultural plains are relatively flat. However, routes that venture into the cork oak groves and surrounding hills, such as the Atalaia de Grândola loop from Grândola, can feature more significant climbs, with elevation gains of over 500 meters (1,640 feet). Easy routes like the Comporta Road Mural loop from Alcácer do Sal have minimal elevation changes, around 90 meters (295 feet).
Many routes provide scenic views of the Alentejo landscape, including the Sado River and the historic town of Alcácer do Sal with its castle. Trails that climb into the slightly higher areas, particularly those around Grândola or near the Pego do Altar Dam, often offer expansive vistas of the surrounding countryside, rice fields, and woodlands.
Over 30 mountain bikers have explored the varied terrain of Alcácer Do Sal (Santiago) using komoot. They often praise the region's diverse landscapes, from the tranquil rice fields to the shaded cork oak groves, and the opportunities to experience the natural beauty of the Sado Estuary. The mix of easy and moderate trails is also appreciated, catering to different skill levels.
Yes, several routes incorporate or pass near local water bodies. The Comporta Road Mural – Pego do Altar Dam loop from Alcácer do Sal is a prime example, taking you past the scenic Pego do Altar Dam and its reservoir. The region also features other reservoirs like the Vale do Gaio Dam, offering picturesque settings for your ride.
Yes, interspersed with the rice paddies, you'll find coniferous woodlands and cork oak groves. These areas, particularly noted for their pine nut harvest, offer shaded trails and a different type of terrain, often with rolling hills. Estates like Herdade da Barrosinha, mentioned in regional research, are known for their winding paths through cork oak forests.


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