Cyclists at Slotsmøllen at Brundlund Castle

Flensburg Fjord Route

Photo: Destination Sønderjylland

Flensburg Fjord Route is a scenic cycle route that cuts through the eastern part of the border country. The route runs through several major towns such as Aabenraa, Sønderborg and Flensburg.

Download GPX file of the route

Download the “Flensburg Fjord Route” cycling guide


Highlights on the route:

Don’t forget to visit the beautiful palace and castle gardens whilst on the route, or how about taking the kids to the experience park at Universe Science Park, History Centre Dybbøl Banke or Brundlund Castle?

You can also visit delightful, so-called “dissemination gardens” along the way: these are green, information and meeting spaces located in an urban environment.

Aabenraa: Here you find a flight of steps with wild, native plants at the historic Genforeningspark that was established to commemorate the Reunification of Denmark at Folkehjem Aabenraa.

Gråsten: A garden at the harbour with a view of the fjord and focus on biodiversity and upcycling.

Flensburg: A U-shaped pontoon surrounded by islets of flowers in the harbour and an amphitheatre on the shore.

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Bikeguide for the Flensburg Fjord Route
Flensburg Fjord Route guidebog
Visit 5 castles in Sønderjylland in 5 days
Couple with cycles in the courtyard at Sønderborg Castle

Flensburg Fjord Route is a cycle route that crosses the border between Denmark and Germany. It’s absolutely ideal if you wish to experience the landscape around Flensburg Fjord and the towns of Glücksburg, Gråsten, Aabenraa, Sønderborg, Augustenborg, Nordborg and of course Flensburg. The cycle route offers a wealth of attractions – castles and palaces, flower gardens, beautiful countryside, maritime activities and, not least, welcoming and hospitable inhabitants. You can get closer to all this and more on the 307-km long cycle route.

The cycle route runs through the eastern part of the border country, where there’s plenty of opportunity to explore the nature and history of the region. The route runs through the region’s major towns, picturesque villages, past open landscapes, along ridges, through woodland and along the banks of attractive fjords.

The route is divided into six stages, so you can easily shorten or lengthen the route depending on what you wish to see, and where you wish to explore. If you have children with you, there are also many places on the route where you can enjoy attractions that are both fun and educational. 

If you cycle all 307 kilometres, you’ll cycle along the banks of Aabenraa Fjord, Alssund and Flensburg Fjord. You’ll cross the Baltic Sea Route and Hærvejen in Denmark and Ochsenweg and Ostseeküsten Radweg in Germany. This means that you can easily extend the route by making detours as you go.

Each stage offers unique experiences: become fully engrossed in wonderful collections of flowers and the region’s spectacular wildlife, or enjoy the chance to feel at first hand the history that has shaped the border country into what it is today.

Couple with cycles in the courtyard at Sønderborg Castle
Photo: Daniel Villadsen
Cycling family on long, straight country road on Kær Halvø
Photo: James Cripps
Familie med cykler ved Dybbøl Mølle
Photo: Destination Sønderjylland
Couple cycling on gravel track on Aarø
Photo: James Cripps

Practical information:

The vast majority of the cycle route runs on tarmac roads and cycle paths, but there may also be other surfaces – gravel roads, for instance, in the forests of Nørreskoven and Kollund Skov.

Overall, Flensburg Fjord Route is a very varied route with great diversity in terms of both terrain and landscape. The eastern part of the route, in particular, features hilly landscapes with several good climbs, whilst the route from Padborg to Aabenraa is flat with only modest climbs in a few places.


Do you need inspiration and suggestions of how to put together a cycling trip along the Flensburg Fjord Route? Which attractions are ideal for those who love to explore beautiful flowers and attractively laid out gardens? And which sights appeal to those wishing to explore the border country’s exciting history or be absorbed in the many art and cultural experiences that are found en route. If you have children with you, you’ll find tips for destinations that are worth visiting for the whole family, where adults and children alike can play and learn.


Find the different package suggestions below:

Flowers and Gardens

The History of the Border Country

Art and Culture

Families with Children

Family with bikes at the harbour front in Sønderborg

Photo:Destination Sønderjylland

The route has developed as part of the Interreg 5A project ”Blumen bauen Brücken – Blomster bygger broer. Eine grenzüberschreitende Gartenschau“. The aim of this project is to jointly promote existing activities and new attractions on both sides of the border and thereby increase the visibility of the region as a single destination by combining elements from the German Gartenschau-Konzept and the Danish “active tourism” concept. For further information about the project, please visit

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Photo:Destination Sønderjylland

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