37
runners
3
runs
Jogging routes around Katnosa are set within the protected Spålen–Katnosa Nature Reserve, a region characterized by forested hills, spruce woodlands, and wetlands. Katnosa lake, situated 464 meters above sea level, is a central feature of this landscape in Nordmarka, north of Oslo. The terrain offers varied running experiences through its natural environment.
Last updated: June 29, 2026
6
runners
12.5km
01:32
250m
250m
Moderate run. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
9
runners
12.1km
01:21
140m
140m
Moderate run. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.

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2
runners
14.3km
01:49
300m
300m
Moderate run. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
2
runners
4.98km
00:35
80m
80m
Easy run. Great for any fitness level. Mostly paved surfaces. Suitable for all skill levels.
9
runners
33.8km
04:05
680m
680m
Hard run. Very good fitness required. Sure-footedness, sturdy shoes and alpine experience required.
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Nice spot for one tent or a couple of hammocks. Easy road access, but it will be shadded in the setting summer sun.
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This guide features 4 distinct running routes around Katnosa. The broader Spålen–Katnosa Nature Reserve, which encompasses these trails, offers at least 15 identified running routes, providing a wide range of options for various fitness levels.
The running trails in Katnosa are characterized by a diverse natural environment, including forested hills, spruce woodlands, and wetlands. You'll find varied terrain that winds through lush valleys, offering a dynamic experience for trail runners.
Yes, Katnosa offers routes suitable for all skill levels. For an easy run, consider the Lensmannsvika loop from Brattlia. This 3.1-mile (5.0 km) path is a gentle run through the natural surroundings, typically completed in about 35 minutes.
For those seeking a more demanding run, the Syljuseterlia – Johannstjennsbrenna loop from Lunner is a difficult 21.0-mile (33.8 km) trail. It leads through diverse woodlands and hills, often taking around 4 hours 4 minutes to complete.
While jogging, you'll experience the pristine natural environment of the Spålen–Katnosa Nature Reserve, characterized by its forested hills and the Katnosa lake itself. The lake is a vital part of the Nordmarka waterway system. A distinctive feature is Aklangen, the northwestern section of Katnosa, which was once a separate lake. The area also preserves some of the last untouched natural areas within Oslomarka.
The Katnosdammen cabin, operated by the Norwegian Trekking Association (DNT), is located at the southern end of the lake and offers stunning views, serving as an excellent starting point for numerous hikes. The dam itself, constructed in 1886, is another notable feature. While the historic Katnosa farm is no longer public, Skiforeningen maintains services at Sandvikshytta.
Many of the trails in Katnosa, especially the easier ones, are suitable for families. The varied terrain includes paths that are less strenuous, making them enjoyable for different ages and fitness levels. The natural environment provides a great setting for outdoor activity with children.
While specific parking details for each route are best checked on the individual route pages, access points to the Katnosa area often have designated parking. For example, the Finntjern – Pershusfjellet loop starts from Tverrsjøstallen, which is a common access point for the region.
Katnosa is situated north of Oslo, and while direct public transport to every trailhead might be limited, the region is generally accessible. For detailed public transport options to Nordmarka and access points like Katnosdammen, you might find information on local transport provider websites or resources like VisitOslo's page on Nordmarka-Katnosdammen.
Yes, the Katnosdammen cabin, a self-service cabin operated by the Norwegian Trekking Association (DNT), offers accommodation and is a great base for exploring. Additionally, the Skiforeningen organization maintains services at Sandvikshytta, which can provide amenities for visitors.
Over 60 runners have used komoot to explore Katnosa's varied terrain. They often praise the region's pristine natural environment, the diverse landscapes of forested hills and wetlands, and the variety of routes available for different ability levels.
Yes, many of the routes in Katnosa are designed as loops, offering a convenient circular experience. Examples include the popular Finntjern – Pershusfjellet loop from Tverrsjøstallen and the shorter Lensmannsvika loop from Brattlia.
Katnosa offers a rewarding experience throughout much of the year. The varied terrain is particularly beautiful in spring and autumn with changing foliage. Summer provides longer daylight hours and generally pleasant temperatures. Winter jogging is also possible, though trail conditions may vary and require appropriate gear due to snow and ice.


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