4.0
(117)
958
riders
12
rides
Touring cycling in Kosteröarnas Naturreservat offers a unique experience across a largely car-free environment, encompassing the islands of North and South Koster within Sweden's only marine national park. The landscape varies from South Koster's lush cultivated areas, deciduous forests, and coastal meadows to North Koster's rugged archipelago terrain with exposed cliffs and ancient pebble fields. The bedrock consists of gneiss granite and extensive shingle fields, supporting diverse flora. This region provides a network of roads suitable for no traffic touring…
Last updated: October 11, 2026
4.8
(13)
147
riders
14.1km
01:01
100m
100m
Easy bike ride. Great for any fitness level. Mostly paved surfaces. Suitable for all skill levels.
4.0
(1)
12
riders
Easy bike ride. Great for any fitness level. Mostly paved surfaces. Suitable for all skill levels.

4.6
(28)
131
riders
29.2km
02:04
300m
300m
Moderate bike ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
4.0
(2)
8
riders
Moderate bike ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
4.3
(3)
16
riders
33.0km
02:05
200m
200m
Moderate bike ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
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Popular around Kosteröarnas Naturreservat
Nice place with a view of the water and good food. Since I wanted to take the ferry back from Kilesand, it was also perfect to stay here, as it's only a few minutes by bike.
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If you ask nicely, you can get free electricity for e-bikes here
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A nice little information center about the nature reserve. There's also the opportunity to purchase souvenirs.
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The visitor center houses the Naturum, an information terminal about the Kosterhavet nature reserve. Public restrooms and rest areas with benches and tables are also located here. You can easily pass the time waiting for the ferry.
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LOCATION AND SURROUNDINGS – The chapel is located in the northern part of Southkoster and is Sweden's westernmost place of worship. The site is completely secluded in a valley directly below and east of Valfjäll, the island's highest mountain, and is sheltered from westerly winds. The property is only slightly hilly and opens onto the flat valley. The cemetery is separate, on a slope towards Kostersundet, just over a kilometer north-northeast of the chapel. PLANNING AND DEVELOPMENT OF THE EXISTING CHURCH – The first place of worship on the island, Kosters Chapel was consecrated in 1939. The drawings were designed by Knut Nordenskjöld. EXTERIOR AND INTERIOR – The architecture is characterized by 20th-century classicism with elements of national romanticism. The building is made of paneled wood. The central roof section is raised and has a gable roof. The roofs of the side sections are pitched. The church has a single nave with a small extension east of the altar. The stained glass in the round window in the chancel is by Yngve Lundström and N.P. Ringström. The sacristy is located next to the north wall of the chancel. On the west side is a tower with a high spire. The tower has a recessed upper section with wide, semicircular light openings. The ground floor serves as an armory and is the same width as the church. The interior is covered by a recessed barrel vault and features decorative paintings (marbling) by Carl Otto Svensson. The interior decoration corresponds to the year the church was built. Below the round window in the east hangs the altarpiece by Gunnar Torhamn. The pews are open. This information was compiled by the National Antiquities Board, Building Register / Research Project Parish Churches, Cultural Heritage and Building History 1996.
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Stop off at the information centre before your walk to find out about Kosterhavet National Park – Sweden’s first National Marine Park. You can check the maps of the hiking paths, and visit the exhibition and aquarium. Check the website for opening times.
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Strömstad with its many piers and beautiful nature is always worth a visit.
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Strömstad and its surroundings with the many piers and the landscape are perfect for a bike tour and always worth a trip.
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Kosteröarnas Naturreservat offers over a dozen dedicated no-traffic touring cycling routes. These routes cater to various skill levels, with 4 easy, 7 moderate, and 2 difficult options, ensuring a suitable ride for most cyclists looking for peaceful exploration.
The terrain varies significantly across the islands. On South Koster, you'll find lush cultivated areas, deciduous forests, and coastal paths, often on well-maintained roads suitable for touring bikes. North Koster presents a more rugged archipelago landscape with exposed cliffs and ancient pebble fields. While largely car-free, some paths might be gravel or compacted earth, offering a diverse cycling experience.
Yes, Kosteröarnas Naturreservat is excellent for family cycling due to its largely car-free environment, especially on South Koster. Many of the easy routes are suitable for families, such as the 8.4 km Strömstad Fire and Rescue Service – Naturum Kosterhavet loop from Syd-Koster, which offers a gentle ride through scenic areas. Bike rentals are also readily available on the islands.
While Kosteröarnas Naturreservat is generally dog-friendly, specific regulations may apply within the national park and nature reserve areas. It's best to keep dogs on a leash, especially during nesting seasons or when cycling through areas with livestock or sensitive wildlife. Always ensure your dog is well-behaved and doesn't disturb other visitors or local fauna.
The routes offer access to numerous natural and cultural attractions. On South Koster, you can cycle past the charming Brevik Fishing Harbor or explore the Strand Trail. Other highlights include the beautiful Norrvikarna Beach on North Koster and various viewpoints offering stunning vistas, such as the Coastal View of Kosteröarna Nature Reserve. Don't miss Naturum Kosterhavet for insights into the marine park.
Yes, many of the no-traffic cycling routes in Kosteröarnas Naturreservat are designed as circular loops, allowing you to start and end at the same point without retracing your steps. An example is the 14.2 km Kyrkosund Harbor – Brevik Fishing Harbor loop from Syd-Koster, which is an easy and scenic option.
The best time for touring cycling in Kosteröarnas Naturreservat is typically from late spring to early autumn (May to September). During these months, the weather is generally mild and pleasant, and the islands are vibrant with flora and fauna. Summer offers the warmest temperatures but can also be busier, while spring and autumn provide a quieter experience with beautiful seasonal colors.
The elevation gain on the no-traffic routes in Kosteröarnas Naturreservat varies. Many routes, especially on South Koster, are relatively flat, making them accessible for all skill levels. For instance, the Strömstad Fire and Rescue Service – Naturum Kosterhavet loop has an elevation gain of around 60 meters. More challenging routes, like the 39.9 km Hålkedalskilen Marina – View of Starekilen Bay loop, can have up to 370 meters of elevation gain, offering more of a workout.
Kosteröarnas Naturreservat is primarily accessed via ferry from Strömstad. The islands themselves are largely car-free, making them ideal for cycling. Once you arrive, you can either bring your own bike on the ferry or rent one at the docks on the islands. Public transport connections to Strömstad are available, making it convenient to reach the ferry terminal.
Yes, Kosteröarnas Naturreservat has charming cafes and restaurants scattered across the islands, particularly in the small ports and villages. You'll find opportunities to stop for a meal or a coffee break, especially on South Koster. For example, Kosters Trädgårdar offers organic farming, a farm shop, and a restaurant, making for a pleasant stop during your ride.
The area is highly rated by the komoot community, with an average score of 4.1 stars from 88 ratings. Reviewers often praise the unique experience of cycling in a largely car-free environment, the diverse and picturesque landscapes ranging from lush forests to rugged coastlines, and the tranquility that allows for a truly immersive outdoor experience. The well-maintained paths and accessibility to natural attractions are also frequently highlighted.
Absolutely. Kosteröarnas Naturreservat offers several easy routes perfect for beginners or those seeking a relaxed ride. The 8.4 km Strömstad Fire and Rescue Service – Naturum Kosterhavet loop from Syd-Koster is a great option, featuring minimal elevation and beautiful scenery, ideal for getting comfortable with touring cycling in the car-free environment.


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