4.7
(37)
231
hikers
24
hikes
Bus station hiking trails in Kålsö naturreservat explore a scenic peninsula characterized by lush deciduous forests, grazed shore meadows, and rocky outcrops. This nature reserve, located on southern Mörkö, features ancient oak and linden trees, diverse plant life, and views over the inner archipelago's bays and channels. The terrain is generally easily walkable, offering paths through groves and along the coastline.
Last updated: May 12, 2026
5.0
(2)
22
hikers
22.4km
05:51
160m
170m
Hard hike. Very good fitness required. Easily-accessible paths. Suitable for all skill levels.
4.3
(6)
13
hikers
9.10km
02:19
30m
30m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.

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5.0
(3)
32
hikers
2.46km
00:38
10m
10m
Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.
4.0
(1)
9
hikers
7.08km
01:48
20m
20m
Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.
4.5
(2)
17
hikers
Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.
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Even in the "rainy season" you can sit comfortably inside 😃
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Along the canal you can walk through the village and beyond
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Super delicious Kanelbullar and seating in the shade by the canal
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Beautiful view from the small rocky hill
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Trosa is a picturesque summer resort on the Baltic Sea. There are cozy alleys, pastel-colored wooden houses, numerous shops and cafés, a harbor with a restaurant (Tullhuset) and an old tannery with a museum. A small river, the Trosaån, flows through the town.
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The place name is probably derived from the Old Icelandic word trauŏur (sluggish, ponderous) and refers to the calm and slow flow of the Trosaån River.
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This bridge originally belonged to a brewery that brewed beer and thin beer and produced lemonade until 1902. The machinery is on display in the museum in Arboga.
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Tullgarn Castle, built at the end of the 16th century under Count Karl Sture, presents itself as simple yet beautiful. Over the centuries, the royal castle grew into a 43-meter-long and 15-meter-wide main building with two 8-meter-wide wings. An open courtyard leads directly to a Baltic Sea bay. The understated castle park is stunning, with its magnificent ancient trees, hedges, and labyrinths. The bathing jetty and orangery also invite visitors to stroll. A tour of the castle itself is highly recommended. It is currently open from 11:30 a.m., and guided tours in Swedish and English are available.
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There are over two dozen hiking routes in and around Kålsö naturreservat that are accessible from bus stations. The majority of these, 19 routes, are rated as easy, making the area very accessible for most hikers.
Kålsö naturreservat is known for its 'lättvandrat' (easily walkable) terrain. You can expect diverse landscapes including lush deciduous forests, grazed shore meadows along Kålsöfjärden, and rocky outcrops offering scenic views. While generally easy, some areas, especially the shore meadows, can be damp, so waterproof shoes are advisable.
Yes, there are several circular routes available. For example, the Bryggarebron (Brewer's Bridge) – Trosa Canal loop from Trosa offers a moderate 9.1 km circular hike, while the shorter Trosa Canal loop from Trosa is an easy 2.5 km option.
Kålsö naturreservat is very family-friendly, with many easy routes. The Trosa Canal loop from Trosa is a short, easy option at 2.5 km. Another great choice is the Bryggarebron (Brewer's Bridge) – Lisson Bageri loop from Tomtaklintskogen, an easy 4.7 km route that's perfect for a relaxed outing.
Yes, dogs are generally welcome on the trails. However, within Kålsö naturreservat, it is important to keep pets leashed to protect wildlife and maintain the natural environment, as per reserve regulations.
The region offers beautiful views over the fjord and the inner archipelago's bays and channels from rocky outcrops. You'll also encounter lush deciduous forests with ancient oak trees, grazed shore meadows, and the ecologically significant Boviken Bay. Keep an eye out for diverse birdlife, especially in spring.
While most routes are easy, there are options for more experienced hikers. The Trosa to Tullgarn Castle – Sörmlandsleden stage 56 is a challenging 22.3 km route that offers a significant day hike experience.
The area is highly rated by the komoot community, with an average score of 4.7 stars from 37 ratings. Reviewers often praise the easily walkable terrain, the diverse and beautiful natural landscapes, and the peaceful atmosphere, making it ideal for accessible outdoor adventures.
While specific facilities vary by route, the broader Mörkö island, where Kålsö naturreservat is located, features a recently constructed shelter overlooking the water. This shelter offers a convenient resting point with a fireplace and basic amenities, perfect for a break during your hike.
Spring and early summer are particularly beautiful, with vibrant birdlife and blooming flora in the groves and pastures. Autumn offers stunning fall foliage in the deciduous forests. The 'lättvandrat' nature of the trails makes them enjoyable for most of the year, though waterproof shoes are recommended for damp areas, especially after rain or in wetter seasons.
Yes, as a nature reserve, certain rules apply to protect the environment. These include not disturbing wildlife, keeping dogs leashed, and refraining from making fires. Fishing in Boviken Bay is also restricted from April 1st to July 31st. Always respect local signage and regulations.


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