4.8
(19)
147
riders
17
rides
Mountain bike trails around Hammersø are set within a unique rift valley on Bornholm, Denmark, characterized by significant granite bedrock formations and a rugged, varied terrain. The area features the clear waters of Hammersø, Denmark's only mountain lake, and the prominent Hammerknuden, an 82-meter granite headland offering dramatic coastal views. This landscape provides natural challenges like roots, rocks, and solid cliff surfaces, making it an integral part of Bornholm's extensive mountain biking network.
Last updated: May 14, 2026
4.5
(2)
13
riders
37.7km
02:39
390m
390m
Moderate mountain bike ride. Good fitness required. Advanced riding skills necessary.
5.0
(2)
9
riders
17.6km
01:09
170m
170m
Easy mountain bike ride. Great for any fitness level. Suitable for all skill levels.

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5.0
(3)
10
riders
65.3km
03:57
590m
590m
Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.
6
riders
65.9km
04:59
560m
560m
Moderate mountain bike ride. Good fitness required. Advanced riding skills necessary.
11
riders
41.5km
02:53
380m
380m
Moderate mountain bike ride. Good fitness required. Advanced riding skills necessary.
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A fantastic view, it makes you look forward to it.
1
0
Parking for a few hundred cars, and subject to payment.
1
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There's a small snack bar here, including delicious soft ice cream.
1
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While exploring the north coast, you should definitely take a moment to visit Allinge Harbour. This authentic Bornholm port was blasted directly out of the rocky shoreline to accommodate larger ships. Today, it's a bustling hub for the town, surrounded by eateries, shops, and a vibrant seaside atmosphere. Whether you're watching the fishing boats or just enjoying the amenities, it's a perfect spot to spend some time.
2
0
You can't really see much through the trees
0
0
Beautiful sandy beach, not too big, ideal for a short rest.
0
0
Northern Europe's largest castle ruin towers on a steep rock at the northern tip of Bornholm.
1
0
Best highlight of the island. Amazing view in the early morning.
0
0
There are 17 mountain bike trails around Hammersø listed on komoot, offering a range of experiences from easy to difficult. This includes 5 easy, 10 moderate, and 2 difficult routes.
The terrain around Hammersø is characterized by its unique geological landscape, including a rift valley and significant granite bedrock formations. You can expect natural challenges such as roots, rocks, and solid cliff surfaces, along with varied habitats like rocky heath, mixed forests, and lush valleys. Bornholm's trails are known for steep uphills and downhills, drops, jumps, and narrow singletracks.
Yes, there are several easy trails. An excellent option is the Hammershus Castle Ruins – Allinge loop from Allinge-Sandvig, which is 17.6 km long and passes by historic landmarks and offers coastal views. Bornholm generally offers routes for various skill levels, including green-graded paths.
The area is rich in both natural beauty and history. You can explore the dramatic granite headland of Hammerknuden, the clear waters of Hammersø (Denmark's only mountain lake), and other quarry lakes like Opalsøen. Historic sites include the impressive Hammerhus castle ruins, Northern Europe's largest medieval castle ruin, and lighthouses such as Hammer Fyr and Hammerodde Fyr. The Hammershus Castle Ruins – Allinge loop from Allinge-Sandvig is a great route to experience some of these.
The mountain bike routes in Hammersø are highly rated by the komoot community, with an average score of 4.8 stars from 19 reviews. Riders often praise the diverse coastal and inland scenery, the challenging granite formations, and the integration of historic landmarks into the routes.
Yes, for those seeking longer and more challenging rides, the Allinge Harbor – Svaneke Harbour loop from Allinge-Sandvig is a moderate 65.3 km trail that leads through varied landscapes. Another substantial option is the Allinge – View of Lilleborg Ruins loop from Allinge-Sandvig, covering 61.8 km.
While specific dog-friendly trail designations are not provided for individual routes, Bornholm's extensive trail network often allows dogs, provided they are kept on a leash, especially in nature reserves and near livestock. It's always best to check local signage or park regulations for specific trails before heading out with your dog.
Bornholm's trails are designed to be ridden year-round, with many paths featuring crushed granite surfaces. However, for the most pleasant experience, spring and autumn offer cooler temperatures and beautiful scenery. Summer is also popular, but trails can be busier.
The Hammersø area, being part of Bornholm's popular northern tip, has amenities in nearby towns like Allinge-Sandvig. You can find cafes, pubs, and restaurants there to refuel after your ride. The region is well-equipped for tourists and cyclists.
Parking is generally available in the towns and near popular attractions in the Hammersø and northern Bornholm area, such as near Hammershus Castle Ruins or in Allinge-Sandvig. Look for designated parking areas, especially when accessing trailheads.
The Vang Harbour – Teglkås Harbor loop from Allinge-Sandvig is a popular moderate route, covering 37.7 km. It offers diverse coastal and inland scenery, making it a well-rounded experience for riders looking for a significant but not overly difficult challenge. It's a great way to explore the varied landscapes of the region.
Given Hammersø's location within a rift valley and near the 82-meter high Hammerknuden granite headland, many trails will feature natural elevation changes. Routes often provide dramatic coastal views and vistas over the unique geological formations. The island's terrain includes steep uphills and downhills, offering a dynamic riding experience.


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