4.3
(9)
24
riders
6
rides
Mountain bike trails in Spålen-Katnosa Naturreservat traverse a classic Nordmarka landscape, characterized by expansive, forested hills and significant wetlands. The region features large lakes, most notably Lake Katnosa, and a varied topography that includes both gentle slopes and more challenging, steep sections. This diverse environment provides a dynamic setting for mountain biking, catering to different skill levels.
Last updated: July 4, 2026
3
riders
27.4km
02:20
380m
380m
Hard mountain bike ride. Good fitness required. Advanced riding skills necessary. Some portions of the route may require you to push your bike.
3.9
(9)
1
riders
26.4km
01:44
380m
380m
Moderate mountain bike ride. Good fitness required. Advanced riding skills necessary.

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3.9
(7)
3
riders
24.1km
02:11
540m
540m
Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.
4.0
(1)
4
riders
29.1km
02:25
450m
450m
Moderate mountain bike ride. Good fitness required. Advanced riding skills necessary.
5
riders
20.7km
01:29
340m
340m
Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.
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Really nice lake, with some lovely spots to swim, camp and be on the water.
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A rennovated stable, today Tverrsjøstallen is a simple dining spot that serves food and drink at weekends during the skiing season. While it's closed at other times in the year, the bus stop here is the ideal start point for a hike to Svarttjernshøgda, Nordmarka's highest point.
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This small dam bridges the connection between Storflåtan and Vesleflåtan.
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Vassendvika is a bay on the Storflåtan. Here you’ll find fire pits and a place to rest.
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Vikseterfossen is a hidden natural gem located in the Krokskogen region, near Lake Damtjern. The waterfall is part of a stream that flows through a lush, forested ravine, offering a more secluded experience compared to the more frequented trails in the area.
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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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The trails in Spålen-Katnosa Naturreservat traverse a classic Nordmarka landscape, featuring extensive forested hills, significant wetlands, and large lakes like Katnosa. You'll encounter varied topography, from gentle slopes to more challenging, steep sections. Some routes may include 'scooter trails' which offer fresh downhill sections, and areas like Sinnerdalen are characterized by snowy, forested valleys.
Yes, the reserve offers routes suitable for various skill levels. For an easier ride, consider the Viewpoint Over Storflåtan – Damtjern loop from Damtjern. This 8.6-mile (13.8 km) trail leads through extensive spruce forests and is rated as easy, making it a good option for those looking for a less strenuous experience.
Mountain bike trails in Spålen-Katnosa Naturreservat vary significantly in length and duration. You can find shorter routes like the Viewpoint Over Storflåtan – Damtjern loop, which is about 8.6 miles (13.8 km) and takes around 1 hour 9 minutes. Longer, more challenging routes, such as the Snowy Road in Nordmarka – Lake View in Nordmarka loop from Myllsdammen, can be up to 17.0 miles (27.4 km) and take over 2 hours to complete.
Yes, many of the mountain bike routes in the reserve are designed as loops. Examples include the popular Velofoss loop from Jevnaker kirke, a moderate 16.4-mile (26.5 km) path, and the Karisnaret – Fossen loop from Jevnaker, which covers 15.0 miles (24.1 km) with significant elevation.
The reserve is known for its largely untouched natural environment. You'll encounter extensive spruce forests, wetlands, and the significant Lake Katnosa. Some routes offer lake views, while others pass through scenic areas like Sinnerdalen, a forested valley. The area also holds cultural heritage sites, adding another layer of interest to your ride.
Elevation gains vary depending on the route's difficulty. Easier trails, like the Viewpoint Over Storflåtan – Damtjern loop, have around 460 feet (140 meters) of ascent. More challenging routes, such as the Karisnaret – Fossen loop from Jevnaker, can involve over 1770 feet (540 meters) of climbing, requiring good endurance.
The area is highly rated by the komoot community, with an average score of 4.3 stars from over 9 reviews. Riders often praise the diverse terrain, the serene lake environments, and the extensive network of trails that cater to different ability levels, from easy paths to challenging, technical sections.
Spålen-Katnosa Naturreservat is a natural area, and generally, dogs are permitted on trails if kept on a leash, especially during certain seasons to protect wildlife. It's always advisable to check local regulations or park signage for specific rules regarding dogs in nature reserves to ensure a pleasant and compliant experience.
The best time for mountain biking is typically from late spring through early autumn (May to October), when the trails are free of snow and ice. During these months, the weather is generally milder, and the natural beauty of the forested hills and wetlands is at its peak. Winter conditions can make many trails unsuitable for mountain biking, as they may be used for cross-country skiing.
Yes, some routes in the area pass by notable water features. For example, the Viewpoint Over Storflåtan – Vikseterfossen Waterfall loop from Jaklefoss is a moderate 18.1-mile (29.0 km) route that specifically highlights the Vikseterfossen Waterfall, offering a scenic point of interest during your ride.
While the reserve is known for its wild character, some starting points for routes, such as Myllsdammen or Jevnaker kirke, may be accessible by local bus services. However, public transport options can be limited, so it's recommended to research specific routes and their nearest public transport links in advance. Bringing your bike on public transport might also have restrictions.
Parking is typically available at common trailheads or access points around the reserve. For routes starting from locations like Myllsdammen, Jevnaker kirke, or Damtjern, you can usually find designated parking areas. It's advisable to check the specific starting point of your chosen route for detailed parking information before your trip.


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