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Routes
Bike touring routes & trails
Germany
Baden-Württemberg
Tuttlingen
Aldingen

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

Routes
Bike touring routes & trails
Germany
Baden-Württemberg
Tuttlingen
Aldingen

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

Hard

4.6

(10)

48

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: July 16, 2026

Tips

Your route passes through protected areas

Please check local regulations for:

Naturpark Obere Donau

Geopark Schwäbische Alb

Waypoints

A

Start point

Train Station

Get Directions

1

1.71 km

Riedbach Pond on the Orchard Trail

Highlight • Lake

Beautiful fishing pond along the fruit trail.

Translated by Google •

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2

7.43 km

Heubergbahn Railway Bridge

Highlight • Bridge

A piece of history. Notice boards available.

Translated by Google •

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3

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.

Translated by Google •

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4

7.98 km

Car tunnel

Highlight • Bridge

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 …

Translated by Google •

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5

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 …

Translated by Google •

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6

27.6 km

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 …

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7

39.8 km

View of Dürbheim

Highlight • Viewpoint

here it goes steadily uphill for some time 😅😅 the road is relatively little busy, at least on Sunday

Translated by Google •

Tip by

8

41.4 km

The oversized flower pots refer to the following nursery: haering-bluetenrain.de/mobile-website-cat281.html

Translated by Google •

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B

49.2 km

End point

Train Station

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Way Types & Surfaces

Way Types

21.5 km

11.3 km

8.59 km

7.36 km

469 m

< 100 m

Surfaces

30.5 km

10.3 km

5.84 km

2.40 km

186 m

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Elevation

Elevation

Nothing selected – click and drag below to see the stats for a specific part of the route.

Highest point (990 m)

Lowest point (630 m)

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Weather

Powered by Foreca

Thursday 16 July

26°C

16°C

60 %

Additional weather tips

Max wind speed: 13.0 km/h

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