Highlight • Lake
Hiking
4.8
(22)
Romstjern Lake is a tranquil body of water nestled within the expansive Lillomarka forest, located in Nittedal municipality, Akershus, Norway. Situated at an elevation of approximately 275 meters above sea level, this picturesque lake is an integral part of the Slattumsrøa Nature Reserve. It receives its inflow from Lusevasan to the north and drains southward into the larger Steinbruvannet, forming a vital part of the local aquatic ecosystem.
Visitors are consistently drawn to Romstjern Lake for its remarkably clear waters,…
This Highlight is in a protected area
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Nordmarka
Tips
November 20, 2025
Hiking
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Nearby routes
Best routes near Romstjern Lake
5.0
(1)
6
hikers
11.8km
03:23
280m
280m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.
4.7
(3)
34
hikers
6.59km
01:58
200m
200m
Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.
4.0
(1)
19
hikers
5.95km
01:37
80m
80m
Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.
Details
Informations
Elevation 280 m
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Monday 16 March
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Romstjern Lake is integrated into an extensive network of trails suitable for various skill levels. A well-maintained lighted trail runs along its eastern side, providing easy access and a relatively flat path, ideal for beginner hikers and families. For those seeking more challenging routes, trails connect to other notable spots like Stokkevann, Steinbruvann, Lilloseter, and Sinober. The summit of Røverkollen, just 1 km away, offers a moderate climb with rewarding views.
While there isn't a single designated 'loop trail' that circles the entire lake directly along its shore, the lighted trail on the eastern side allows for pleasant walks. Hikers often combine sections of this trail with other paths in the Slattumsrøa Nature Reserve to create their own loops. The time taken depends on the chosen route and pace, but a leisurely walk along the accessible parts of the lake can take under an hour, while longer excursions into the surrounding forest can extend for several hours.
The terrain around Romstjern Lake is varied. The eastern side features a relatively flat and well-maintained lighted trail, making it easily accessible. As you venture further into the Slattumsrøa Nature Reserve, you'll encounter more natural forest paths, which can include varied topography with gentle hills, some rocky sections, and occasional muddy spots, especially after rain. The area is generally well-suited for hiking and trail running.
Visitors arriving by car can find parking options near Brennaveien, where a forest road leads directly to the lake. Parking spots can fill up quickly, especially on warm summer days or weekends. For public transport, the lake is accessible via the lighted trail from Skytta in the north, and from Steinbruvannet and Grorud in the south, which are typically served by bus routes.
Yes, Romstjern Lake is suitable for winter activities. The lighted trail along its eastern side ensures accessibility even in snowy conditions, making it popular for winter hiking and cross-country skiing. The frozen lake surface might also attract ice skaters, but caution is always advised regarding ice thickness. The serene winter landscape offers a beautiful and tranquil experience.
Yes, dogs are generally welcome on the trails around Romstjern Lake and within the Lillomarka forest. As part of the Slattumsrøa Nature Reserve, it's important to keep dogs on a leash, especially during nesting seasons (April 1st to August 20th) to protect wildlife. Always remember to clean up after your pet to maintain the natural beauty of the area for all visitors.
Romstjern Lake is known for its healthy population of trout, perch, and pike, offering good fishing opportunities. To fish in Romstjern Lake, you will need a valid fishing license (fiskekort) for the area. These can typically be purchased online or at local sports shops. Always check local regulations regarding catch limits and fishing seasons before you go.
Romstjern Lake is located within the Slattumsrøa Nature Reserve, which is a natural area without commercial establishments directly on its shores. However, there are often cafes or kiosks at popular trailheads or nearby recreational hubs like Lilloseter, which can be reached via hiking trails. For accommodation, you would need to look in the surrounding municipalities such as Nittedal or Oslo, which offer various options a short drive away.
Romstjern Lake is a popular spot, especially on warm summer days and weekends, due to its clear waters and accessibility for swimming. While it can get busy, the lake offers numerous suitable places along its shore, allowing visitors to spread out without feeling overly crowded. Arriving earlier in the day can help secure a more secluded spot.
Romstjern Lake is an excellent family-friendly destination due to its clear, calm waters perfect for swimming, and the presence of many suitable spots along the shore for picnics and relaxation. The lighted trail on the eastern side provides easy, flat walking paths suitable for children and strollers. The opportunity for fishing and exploring the surrounding nature reserve also adds to its appeal for families.