4.7
(123)
1,792
riders
42
rides
Gravel biking around Alnsjøen offers a diverse experience within the Lillomarka forest, characterized by dense woodlands and varied elevations. The region features serene lake views, with Alnsjøen serving as a minor water reservoir and the source of the Alna River. Its terrain provides a mix of forest paths and varied ascents, suitable for different fitness levels. This area is integrated into the larger Oslomarka system, known for its extensive network of trails.
Last updated: May 17, 2026
2
riders
25.8km
01:49
480m
480m
Hard gravel ride. Very good fitness required. You may need to push your bike for some segments of this route.
18.9km
01:25
340m
340m
Hard gravel ride. Good fitness required. You may need to push your bike for some segments of this route.

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5.0
(3)
37
riders
75.1km
04:56
960m
960m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
20
riders
28.3km
02:08
510m
510m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
5.0
(1)
36
riders
89.5km
05:47
1,230m
1,230m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
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Popular around Alnsjøen
The Høyspenten Trail near Oslo is a short but scenic singletrack segment. Despite its modest length, the trail is appreciated as a connector within Oslo’s extensive network of natural trails, which feature roots, rocks, and classic Scandinavian terrain.
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A worthwhile stopover… even in (late) summer
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Well-known and very nice sports hall in Nordmarka
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Cosy cabin café tucked into the forest, a perfect stop for a coffee or waffle after a walk around the lake.
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Nestled in the forest above Nøklevann, Sarabråten was once the summer estate of Christiania’s 19th-century elite, hosted by timber baron Thorvald Meyer. Today, only a few ruins remain, but the place still carries a quiet grandeur, perfect for a reflective pause in the woods.
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This establishment is open on weekends: waffles and cinnamon buns to your heart's content.
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Sinober, or Sinober Sports Lodge, is a tourist cabin and restaurant located in the northern part of Lillomarka in Oslo. Sinober is a popular destination for hikers and families on outings, both in summer and winter. The lodge also serves as an outdoor daycare center. The lodge is located 9.5 kilometers from Ammerud, 2 kilometers from Movatn, approximately 3 kilometers from the Lillomarka parking lot, and approximately 9 kilometers from Kjelsås/Grefsen/Solemskogen.
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The Alnsjøen area, nestled within the Lillomarka forest, offers a good selection of traffic-free gravel bike trails. You'll find over 40 routes suitable for gravel biking, ranging from moderate to difficult, allowing you to explore the dense woodlands and scenic lake views.
The trails around Alnsjøen feature varied terrain, from accessible forest paths to more challenging ascents and descents. You'll encounter dense woodlands and varied elevations, typical of the Lillomarka forest. While some routes are moderate, a significant number of the available trails are considered difficult, offering a good challenge for experienced gravel bikers.
Yes, for those seeking longer rides, routes like the challenging Kikutstua Café – Skjærsjø Dam loop from Ellingsrudåsen offer an extensive experience. This particular route covers nearly 90 km with significant elevation gain, taking you deep into the forest landscape.
The Alnsjøen area is highly rated by the komoot community, with an average score of 4.7 stars. Reviewers often praise the quiet, traffic-free nature of the trails, the beautiful dense woodlands, and the serene lake views that make for a truly immersive outdoor experience.
Yes, many of the gravel bike trails in the Alnsjøen area are designed as loops, allowing you to start and end at the same point. An example is the Lake in Nordmarka – Lilloseter loop from Linderud, which offers a substantial 25 km ride through the varied forest landscape.
While Alnsjøen itself is a scenic highlight, the broader Lillomarka forest offers many beautiful spots. You'll find serene lake views, dense woodlands, and traces of 18th-century copper mining adding a historical dimension. The area is part of the extensive Oslomarka system, providing a backdrop of natural beauty.
Yes, Alnsjøen is well-integrated into the Oslo region's public transport network. You can often reach starting points for trails within the Lillomarka forest, which surrounds Alnsjøen, via bus or metro, making it convenient to access the traffic-free gravel routes without a car.
While many routes in the area are rated moderate to difficult, the varied terrain of Lillomarka means there are accessible forest paths that can be adapted for family rides. For a moderate option, consider the Main Junction in Nordmarka – Trail Junction 2, Nordmarka loop from Bjerke, which is around 15 km and offers a good introduction to the area's gravel biking.
The best time for gravel biking around Alnsjøen is typically from late spring to early autumn (May to October). During these months, the weather is generally milder, and the trails are free of snow and ice, offering optimal riding conditions. The autumn foliage also provides a particularly scenic experience.
While the immediate Alnsjøen area is primarily natural forest, the broader Lillomarka forest system, which these routes traverse, does have some traditional forest cabins (markastuer) that operate as cafes, especially on weekends. For example, the Skjærsjø Dam – Kikutstua Café loop from Kjelsås specifically mentions Kikutstua Café, a popular stop for cyclists.
Parking is available at various access points around the Lillomarka forest, which encompasses Alnsjøen. Common starting points for trails often have designated parking areas, allowing you to easily unload your bike and begin your traffic-free gravel adventure.


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