The Hauenstein fortification was one of the most important Swiss defense structures of the first world war. It used the natural terrain of the Jura ridges and several bridge heads along the Aare river to defend the important infrastructural center of Olten. This route will take you along many of the key points of these fortifications, while at the same time showing the spectacular landscape.
The tour features:
- A magnificent view on the Jura and Aare valley region
- Historic places from the first world war era (such as Chilchzimmersattel, Trimbach, Olten, Boningen, Kappel, Hägendorf, Allerheiligenberg)
- Varied landscapes (pastures, deciduous and pine forests, river, villages)
- Mostly small roads with little car traffic
- Many panoramic views, with matching climbs
Almost all roads on the route are paved, most but not all are well maintained. I would recommend to cycle the tour clockwise.
- given the narrow roads, this tour is not suitable for large (>8 persons) groups.
- some stretches of road are under construction and are missing an asphalt top layer. Only go riding when you feel comfortable with this.
- not all roads on the route will be kept snow-free, so it is not possible to go when there is snow
Tips and hints
- Several facilities to eat are available underway (such as the restaurants in Langenbruck, Berghaus Oberbölchen, Bergrestaurant Kallhof, restaurants in Trimbach/ Olten/ Aarburg/ Hägendorf)
- A number of public water tap points can be found along the route, so no need to bring lots of water. (weather permitting, as these tap points are switched off in winter)
When starting from Langenbruck: Langenbruck is halfway on the N12 between Oensingen and Liestal, and can be reached from both directions.
When starting from Olten: best to use public transport, otherwise Olten is well connected via the A1/A2 highways.
When starting from Langenbruck: parking spots available in the center of the village, including at the Kneippanlage. Additional parking spots might be available at the Solarbob facility.
When starting from Olten: parking in the center of Olten is not advisable.