Au Tunnel (1922–1933) – Car tunnel loop from Aldingen

Bike touring routes & trails

Au Tunnel (1922–1933) – Car tunnel loop from Aldingen

Hard

4.6

(10)

riders

Au Tunnel (1922–1933) – Car tunnel loop from Aldingen

03:29

49.2km

720m

Cycling

Hard bike ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels. The starting point of the route is accessible with public transport.

Last updated: August 4, 2026

Tips

Your route passes through protected areas

Please check local regulations for:

Naturpark Obere Donau

Geopark Schwäbische Alb

Waypoints

Start point

Train Station

Get Directions

1.71 km

Riedbach Pond on the Orchard Trail

Highlight • Lake

Beautiful fishing pond along the fruit trail.

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7.43 km

Heubergbahn Railway Bridge

Highlight • Bridge

A piece of history. Notice boards available.

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7.91 km

Au Tunnel (1922–1933)

Highlight • Structure

Gloomy tunnel just before Gosheim. Due to the length and curvature, you will not see any light at the end of the tunnel when entering the tunnel.

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7.98 km

This short but beautiful section uses the old route of the "Heubergbahn" including the car tunnel. The total of 18 kilometers long route can only be partially driven, which is why it is quite an up and down if you want to ride the entire bike path. Either way, the tunnel south of Gosheim is a highlight. There are plenty of information boards near the tunnel that provide information about the route.

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8.12 km

Heuberg Railway Tunnel

Highlight • Structure

You rarely find a tunnel like this in the middle of a cycle path. Really an experience, especially since the tunnel is also quite long. But be careful, it is quite dark inside as the tunnel is not illuminated and there are some larger potholes on the way.

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27.5 km

Danube Flood Meadows Near Stetten

Highlight • Natural

A flood meadow is an area of grassland or pasture next to a river that is subject to seasonal flooding. Flood meadows differ from water meadows in that the latter are artificially created and maintained, with flood waters being controlled seasonally and even daily.

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