
34
runners
4
runs
Jogging routes around Leirsjøen offer diverse terrain within the Bymarka Nature Reserve, characterized by forests, lakes, and varied elevation. The area includes both Store Leirsjøen and Litl-Leirsjøen, historically preserved as a drinking water source. Runners can find paths ranging from wide, flat trails to more rugged, hilly routes. The landscape features numerous lakes and bogs, providing varied scenery for running.
Last updated: June 27, 2026
5
runners
32.4km
03:51
620m
620m
Hard run. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
4
runners
17.5km
01:57
310m
310m
Hard run. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

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4
runners
8.36km
00:53
120m
120m
Moderate run. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
4
runners
11.2km
01:13
200m
200m
Moderate run. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
2
runners
17.8km
01:58
320m
320m
Hard run. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
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Popular around Leirsjøen
The Leirsjøen area, situated within the expansive Bymarka Nature Reserve, offers a diverse range of terrain. You'll find everything from wide, relatively flat paths suitable for a relaxed run to more rugged, hilly, and even mountainous trails. The landscape is characterized by dense forests, numerous serene lakes, and bogs, providing varied scenery and challenges for runners of all levels.
Yes, while some routes are quite challenging, Bymarka Nature Reserve, which encompasses Leirsjøen, features a network of trails that includes easier, wider paths. For a moderate option, consider the Haneknetjernet loop from Haneknemoen, which is 5.2 miles (8.4 km) and typically takes about 53 minutes to complete, offering a pleasant experience through natural surroundings.
Jogging around Leirsjøen offers beautiful natural sights. You'll encounter the serene waters of Store and Litl-Leirsjøen, historically preserved lakes that are home to trout, char, and even beavers. The trails wind through lush forests, past numerous other lakes and bogs. In autumn, the foliage provides a vibrant display of colors, while spring brings wildflowers. You might also find picturesque viewpoints offering vistas of Trondheim and the surrounding fjord.
The Leirsjøen area, part of Bymarka Nature Reserve, is very accessible via public transportation from Trondheim. You can take a tram to Lian or utilize various bus routes that lead to areas like Skistua, which serves as a popular starting point for many trails. This makes it convenient for city dwellers to escape into nature for a run.
Yes, the area is well-suited for circular running routes. A specific marked path known as 'Leirsjørunden' is highlighted as a dedicated trail around the lake or its immediate vicinity. Additionally, many of the routes in the broader Bymarka network are loops, such as the Putten – Storfløyta loop from Haneknemoen, which is a challenging 10.9 miles (17.5 km) route.
Leirsjøen offers a beautiful running experience throughout much of the year. Spring brings a burst of wildflowers, while autumn transforms the landscape with vibrant red and gold foliage, making these seasons particularly picturesque. The well-maintained trails are generally enjoyable in milder weather. For winter running, specific trails might be groomed, but conditions can vary, so checking local reports is advisable.
Yes, within the Bymarka Nature Reserve, you'll find several mountain cabins or huts that offer refreshments and facilities. Grønlia, for example, has been serving visitors since 1925 and provides superb views across Skjellbreia lake. Skistua is another popular lodge that serves as a starting point for trails and offers amenities. While specific accommodation options directly at Leirsjøen are limited, there is a designated campsite nearby with basic facilities.
Bymarka Nature Reserve, where Leirsjøen is located, is generally dog-friendly. However, it's important to always keep dogs on a leash, especially during certain times of the year to protect wildlife, and to follow local regulations regarding pet access on trails. Always ensure your dog is well-behaved and that you clean up after them to maintain the natural beauty of the area for all users.
For runners seeking a challenge, Leirsjøen and the surrounding Bymarka offer several difficult routes with significant elevation gain. A notable option is the Svenskesletta – Botnetjernslia loop from Avalsjøen, a 20.2 miles (32.4 km) trail that takes approximately 3 hours 50 minutes to complete, featuring substantial climbs through forested areas. Another challenging route is the Østre Småtjernet loop from Grua, a 10.9 miles (17.5 km) trail with varied terrain and notable elevation changes.
While the guide doesn't specify exact parking locations for Leirsjøen itself, the broader Bymarka Nature Reserve has various access points, and it's common for trailheads to have designated parking areas. Given the accessibility by public transport, many runners opt for that, but if driving, look for parking near popular starting points like Skistua or other access points to the reserve.
Runners frequently praise the diverse and scenic landscape of the Leirsjøen area. The combination of serene lakes, dense woodlands, and varied terrain provides a refreshing escape. Many appreciate the well-maintained trails and the options available for different fitness levels, from moderate loops to more challenging long-distance routes. The natural beauty and tranquility of the Bymarka Nature Reserve are consistently highlighted as key attractions.


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