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View of Kreuzberg Castle – Effelsberg Radio Telescope loop from Altenahr

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View of Kreuzberg Castle – Effelsberg Radio Telescope loop from Altenahr

Moderate

3.8

(5)

riders

View of Kreuzberg Castle – Effelsberg Radio Telescope loop from Altenahr

01:33

22.4km

280m

Cycling

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

Last updated: June 29, 2026

Tips

Your route passes through protected areas

Please check local regulations for:

Rhein-Ahr-Eifel

Naturpark Hohes Venn-Eifel

Waypoints

Start point

Train Station

Get Directions

1.12 km

The Ahr River in Altenburg

Highlight • River

The Ahr valley, perfect for the road bike tour at any time. It doesn't matter whether it's up or down it's worth it, also suitable for groups (Belgian roundabout). Finally, I recommend the ascent via Dernau or at the other end, the ascent to Obliers / Lies to leave this beautiful valley.

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1.52 km

Near Altenburg

Highlight • Bridge

Above us the elevated road that bridges the valley and a witness from the Roman era 👍😃

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1.78 km

View of Kreuzberg Castle

Highlight • Viewpoint

At Kreuzberg we pass the castle of the same name.

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1.93 km

Path on the Ahr with view of Kreuzberg Castle

Highlight • Bridge

2.52 km

Kreuzberg Castle

Highlight • Castle

Coming from the Sahrbachtal a nice view of the (private) castle.

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11.2 km

Effelsberg Radio Telescope

Highlight • Monument

The Effelsberg radio telescope is one of the most powerful observatories in Europe. The large surface of the antenna with an opening of approximately 7,850 square meters and a diameter of 100 m is important for the secure reception of the extremely weak radio signals from long distances. The total weight of the steel structure is 3,200 tons. The telescope's parabolic mirror can be rotated 360 degrees in just under fifteen minutes and tilted almost 90 degrees in about five minutes. This allows the entire sky above the horizon to be observed with the telescope. More interesting information is available here: mpifr-bonn.mpg.de/effelsberg

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13.7 km

Rest area in the Sahrbach Valley

Highlight • Rest Area

Nice rest area on the Sahrbach road at the entrance to Binzenbach.

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21.3 km

View of Teufelsloch

Highlight • Natural Monument

The Devil's Hole - an oval in the square rock - was created when the devil fell in love with a damsel, another version reports that the devil had fallen in love with the Ahrwein.

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22.4 km

End point

Train Station

Way Types & Surfaces

Way Types

13.5 km

4.06 km

1.71 km

1.51 km

1.35 km

183 m

< 100 m

Surfaces

17.0 km

2.72 km

1.63 km

613 m

272 m

179 m

Elevation

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

Highest point (340 m)

Lowest point (170 m)

Weather

Wednesday 15 July

27°C

15°C

-- %

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View of Kreuzberg Castle – Effelsberg Radio Telescope loop from Altenahr

The Ahr River in Altenburg

Near Altenburg

View of Kreuzberg Castle

Path on the Ahr with view of Kreuzberg Castle

Kreuzberg Castle

Effelsberg Radio Telescope

Rest area in the Sahrbach Valley

View of Teufelsloch

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