Benkerjoch Pass

The Wasserflue is a mountain of the Jura, located north of Erlinsbach in the canton of Aargau. It lies on the range east of the Salhöhe Pass. An antenna is located on the summit

Densbüren is a municipality in the Aarau District of the canton of Aargau in Switzerland.

Küttigen is a municipality in the district of Aarau of the canton of Aargau in Switzerland.

Staffelegg Pass (el. 621 m.) is a mountain pass in the canton of Aargau in Switzerland. It connects Küttigen and Asp. The postal bus route from Frick to Aarau goes over the pass, and there is a restaurant at the summit.

Oberhof is a municipality in the district of Laufenburg in the canton of Aargau in Switzerland.

Erlinsbach is a municipality in the district of Aarau of the canton of Aargau in Switzerland.

Aarau (Swiss Standard German: [ˈaːraʊ], Alemannic German pronunciation: [ˈɑːræu̯]) is a town, a municipality, and the capital of the northern Swiss canton of Aargau. The town is also the capital of the district of Aarau. It is German-speaking and predominantly Protestant. Aarau is situated on the Swiss plateau, in the valley of the Aare, on the river's right bank, and at the southern foot of the Jura Mountains, and is west of Zürich, 58 kilometres (36 mi) south of Basel and 65 kilometres (40 mi) northeast of Bern. The municipality borders directly on the canton of Solothurn to the west. It is the largest town in Aargau. At the beginning of 2010 Rohr became a district of Aarau.The official language of Aarau is (the Swiss variety of Standard) German, but the main spoken language is the local variant of the Alemannic Swiss German dialect.

Herznach-Ueken is a municipality in the district of Laufenburg in the canton of Aargau in Switzerland. It was established on 1 January 2023 with the merger of the municipalities of Herznach and Ueken.

Wölflinswil is a municipality in the district of Laufenburg in the canton of Aargau in Switzerland.

Salhöhe Pass (el. 779 m.) is a mountain pass in the Jura Mountains of Switzerland between Kienberg in the canton of Solothurn and Erlinsbach in the canton of Aargau. It connects Kienberg in Solothurn and Erlinsbach in Aargau. The pass road has a maximum grade of 9 percent. Although it is the shortest route between Aarau and Basel, traffic over the pass is moderate. After the Bern citizens had conquered the Unteraargau region in 1415, Salhöhe marked the border between the Old Swiss Confederacy and the Further Austrian possessions of the Habsburg dynasty.

Erlinsbach is a municipality in the district of Gösgen in the canton of Solothurn in Switzerland. It was formed from the union on January 1, 2006 of Niedererlinsbach and Obererlinsbach (both were in SO and AG).

The river Suhre is a 34 kilometer long tributary of the river Aare in the Swiss cantons of Lucerne and Aargau. The river rises in Sempachersee (or Lake Sempach) at an elevation of 504 meters above sea level, and joins the Aare east of the town Aarau at an elevation of 362 meters. The most important side valley is the Ruedertal, which joins the Suhretal (or Suhre Valley) at Schöftland. In the medieval age, the river had several names: Suron (1036), Suranum flumen (1210), Sure (1241). Today, the name is written without "h" in the canton of Lucerne, and with "h" in the canton of Aargau. The most important tributaries are the Ruederchen joining at Schöftland, the Ürke joining at Unterentfelden and the Wyna joining at Suhr.