4.6
(1231)
9,984
hikers
350
hikes
Hiking around Østernvannet offers a diverse landscape characterized by a dammed lake surrounded by extensive forest. The area features well-maintained forest roads and marked paths, providing varied terrain for hikers. Small headlands along the water's edge offer secluded spots, while the surrounding woodland provides a sense of immersion in nature. The region is accessible and popular for outdoor activities near Oslo.
Last updated: May 16, 2026
3.70km
00:59
40m
40m
Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.
10
hikers
5.45km
01:27
60m
60m
Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.

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9
hikers
2.67km
00:42
20m
20m
Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.
4.5
(2)
37
hikers
13.7km
03:48
240m
240m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.
11
hikers
11.1km
03:03
190m
190m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.
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It was once considered a historic fortress, although this has not been confirmed. Today it is simply a beautiful vantage point overlooking Bærum.
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You can stop to swim here, and a good free camping spot for families is 20 Meters up.
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At the eastern end of the lake, there is a scree slope to cross. This is not easy with a bicycle or a stroller.
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The area around Østernvannet features a diverse landscape with well-maintained forest roads and blue-marked paths. You'll find trails winding through extensive woodlands and along the idyllic lake, offering varied terrain suitable for different fitness levels. There are options ranging from easy walks to more moderate climbs.
Yes, Østernvannet offers several easy routes perfect for beginners and families. For instance, the Orrhaneberget – Østernvann Lake loop from Grini museum is an easy 3.5-mile (5.7 km) path that winds through forest and along the lake's edge. Another great option is the Orrhaneberget – Østernvann Lake loop from Bråten, a 3.7-mile (6.0 km) trail through wooded areas with lake views.
Yes, many trails around Østernvannet are dog-friendly. The forest roads and paths provide ample space for walks with your canine companion. However, always ensure your dog is under control, and be mindful of local regulations regarding leashes, especially in nature reserve areas or during certain seasons.
Yes, a popular feature for hikers is the approximately two-hour circular trail around Østernvannet. This route is suitable for the whole family and offers diverse terrain, allowing you to experience the lake and surrounding forest. Many of the routes listed on komoot, such as the Orrhaneberget – Østernvann Lake loop from Grini museum, are circular.
Østernvannet is easily accessible by car. You can find parking available at Fossum sports park or the Østervannsvingen car park. From these locations, forest roads lead directly to the lake and the trailheads.
While the region research mentions easy access by car, specific public transport routes directly to the trailheads are not detailed. It's recommended to check local public transport services for connections to areas like Fossum or Grini, which are common starting points for hikes around Østernvannet.
The trails offer immersion in nature with extensive forest and the idyllic Østernvannet lake. You'll find small headlands along the water's edge, providing secluded spots to enjoy the scenery. Some routes, like the View of Bærum from Skuta loop from Fossum, offer views of Bærum from higher points.
Østernvannet is enjoyable throughout much of the year. The forest trails are pleasant in spring, summer, and autumn. In summer, the lake's beaches are popular for swimming, making it a great time to combine hiking with a refreshing dip. Winter hiking is also possible, but conditions may vary, so check local reports for snow and ice.
The area is highly rated by the komoot community, with an average score of 4.6 stars from over 1200 reviews. Hikers often praise the idyllic lake environment, the extensive and well-maintained forest trails, and the variety of circular routes available. The accessibility and natural beauty close to Oslo are also frequently highlighted.
The provided information does not specifically mention cafes or restaurants directly adjacent to the trailheads. However, given its proximity to Oslo and areas like Fossum and Grini, you may find amenities in the nearby communities. It's advisable to bring your own refreshments or check for local establishments before your hike.
The Østernvannet region offers a wide selection of hiking opportunities, with over 350 different routes available for exploration on komoot. This includes a good mix of easy, moderate, and some more challenging trails.
While many routes are easy to moderate, there are options for longer hikes. For example, the View of Bærum from Skuta loop from Bråten is a moderate 8.5-mile (13.7 km) trail with over 240 meters of elevation gain, offering a more extended experience through the area.


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