19
riders
6
rides
Mountain bike trails in Hasleskogen offer diverse terrain and natural features, making it a notable destination for outdoor activities. The area is characterized by natural singletrack, providing an authentic off-road cycling experience. Riders can navigate through trails featuring rock faces, small drops, and natural rock gardens, presenting technical challenges. Elevated areas, including a viewing tower, offer scenic vistas across the surrounding forest.
Last updated: August 22, 2026
4
riders
23.3km
02:08
240m
240m
Hard mountain bike ride. Good fitness required. Advanced riding skills necessary. Some portions of the route may require you to push your bike.
3
riders
43.2km
02:50
370m
370m
Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.

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6
riders
16.9km
01:47
220m
220m
Hard mountain bike ride. Great for any fitness level. Advanced riding skills necessary. Some portions of the route may require you to push your bike.
3
riders
38.5km
02:31
310m
310m
Moderate mountain bike ride. Good fitness required. Advanced riding skills necessary.
1
riders
45.8km
03:11
440m
440m
Moderate mountain bike ride. Good fitness required. Advanced riding skills necessary.
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Parts of Østsidenmarka were designated as a protected area in 2017 to preserve valuable and endangered habitats, such as deciduous forests with oak and ash trees, as well as mature spruce and pine forests. It is a peaceful local recreation area with walking trails through varied woodland landscapes and offers excellent opportunities for nature observation.
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Regimentsmyra Nature Reserve is a protected area established on 21 June 2017 to safeguard threatened and vulnerable habitats, including broadleaf woodland with oak and ash, as well as spruce and pine forest. Visit for a quiet walk where you can look for mixed forest edges, older trees, and layered vegetation, and keep an eye out for signs of woodland wildlife.
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This section, known as Bryggstien or the Bridge Trail, literally runs over the rocks. Since it was impossible to create a safe path this close to the water, a wooden walkway on stilts was built. The view along the entire route is superb.
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Glengsholen looks like a large lake, but it’s actually an inlet of the Glomma Fjord. From the shore, you’ll enjoy a magnificent view and spacious lawns where you can picnic, play, or relax. This is also where the ferry arrives.
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Bike bridge that serves to get you between Sarpsborg and Frederikstad on the most traffic free route possible.
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Birthplace of Norwegian South Pole adventurer Roald Amundsen. There's a museum and a small café here.
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Here you can find out everything about the polar explorer.
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Here the great Norwegian polar explorer was born.
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Hasleskogen offers a selection of 9 mountain bike trails, catering to various skill levels from moderate to difficult. These routes provide diverse terrain for an engaging off-road experience.
While Hasleskogen is known for its natural singletrack and technical sections, some trails feature 'easy flow' sections that can be more accessible. However, the listed routes are primarily moderate to difficult. If you're a beginner, look for sections described as having an easy flow or consider starting with shorter, less technical parts of the moderate trails.
You can expect diverse natural terrain, including singletrack, rock faces, small drops, and natural rock gardens, which offer technical challenges. There are also sections with an 'easy flow' and some trails may even traverse 'swampy areas'. The landscape includes elevated areas and forest paths.
Yes, Hasleskogen features several challenging trails ideal for experienced riders. Routes like the Tvetervann loop from Østfold are rated as difficult and include technical sections with natural obstacles. The area's natural singletrack, rock faces, and rock gardens provide ample challenge.
Yes, Hasleskogen offers elevated areas and a viewing tower, providing scenic vistas across the surrounding forest. Some trails include fast, gently downhill-sloping sections from the viewing tower, combining an exhilarating ride with great views.
Popular loop trails include the Sarpsborg – Roald Amundsen Birthplace loop from Sarpsborg, which is 38.9 km long and features varied forest paths. Another favorite is the Drawbridge Over the Moat – Roald Amundsen Birthplace loop from Sarpsborg, a 38.8 km trail through diverse forest terrain.
The best time for mountain biking in Hasleskogen is generally during the warmer, drier months when trails are less likely to be muddy or covered in snow. Spring through autumn typically offers the most favorable conditions for enjoying the diverse terrain.
While Hasleskogen is popular for outdoor activities year-round, winter mountain biking can be challenging due to snow and ice. Trail conditions can vary significantly, so it's advisable to check local reports and be prepared for potentially slippery or snow-covered sections if riding in winter.
More than 40 mountain bikers have used komoot to explore Hasleskogen's varied terrain. Riders often praise the authentic off-road experience provided by the natural singletrack, as well as the mix of technical challenges and 'easy flow' sections.
Elevation gains on Hasleskogen's mountain bike trails vary, with routes like the Sarpsborg – Glengsholen Park loop from Sarpsborg featuring an ascent of approximately 365 meters. Other trails, such as the Landemyra – Ravneberget loop from Sarpsborg, have around 237 meters of elevation gain, offering a good workout.
Hasleskogen is located in Sarpsborg, Norway. While specific public transport connections directly to trailheads can vary, Sarpsborg itself is accessible by public transport. We recommend checking local bus or train schedules to Sarpsborg and then planning your final approach to the trail starting points.
Specific parking information for individual trailheads is not provided in the route details. However, as a popular outdoor area in Sarpsborg, there are likely designated parking areas near common access points to Hasleskogen. It's advisable to research local parking options in Sarpsborg before your visit.


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