View of the Schwarzer Regen – Altnußberg Castle Ruins loop from Kollnburg

Mountain biking trails

View of the Schwarzer Regen – Altnußberg Castle Ruins loop from Kollnburg

Hard

4.6

(82)

296

riders

View of the Schwarzer Regen – Altnußberg Castle Ruins loop from Kollnburg

03:49

44.0km

1,000m

Mountain biking

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

Last updated: October 8, 2026

Tips

Includes segments that go up or down a series of steps

You may need to carry your bike.

After 9.86 km for 14 m

After 30.4 km for 45 m

Waypoints

Start point

Bus stop

Get Directions

3.69 km

Distelberg Chapel

Highlight • Religious Site

Beautiful chapel, bench available.

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19.7 km

Neunussberg Castle Ruins

Highlight • Castle

Neunussberg castle ruins
The Neunussberg castle ruin rises on a 696 m high hilltop near Viechtach. It offers wonderful panoramic views of the Regental and the entire Bavarian Forest.

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26.0 km

Gumpenried Hydroelectric Power Plant

Highlight • Structure

The hydropower plant is located in the middle of Bavarian 🇨🇦 Pure nature🤩 Nice for hiking or with the MTB 😉

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26.8 km

Picnic area with a view of the Schwarzer Regen

Highlight • Viewpoint

Nice seating 😉with a fantastic view of the black rain🤩

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26.8 km

View of the Schwarzer Regen

Highlight • Viewpoint

Idyllically located rest stop with seating and a table, as well as a magnificent view of the Regental or the Schwarzer Regen and the tracks of the Waldbahn.

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26.8 km

Schwarzer Regen River

Highlight • River

Beautiful place 😍

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26.8 km

View of the River Regen and railway in Naturpark Bayerischer Wald

Highlight • Viewpoint

Dreamlike landscape 🤩like in Canada 🇨🇦 pure nature 👍

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30.1 km

Altnußberg Castle Ruins

Highlight • Castle

Nice area for hiking 🥾 or mountain biking 🚵🏽‍♀️ Steep climb which is worthwhile beautiful beer garden 👌 Unfortunately currently closed

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44.0 km

End point

Bus stop

Way Types & Surfaces

Way Types

21.7 km

12.8 km

7.79 km

957 m

739 m

< 100 m

Surfaces

13.6 km

9.75 km

7.28 km

7.03 km

5.87 km

528 m

Elevation

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

Highest point (650 m)

Lowest point (400 m)

Weather

Sunday 11 October

12°C

2°C

0 %

Additional weather tips

Max wind speed: 8.0 km/h

to get more detailed weather forecasts along your route

Comments

October 3, 2025,Viechtacher 3 Burgentour 🚴‍♀️

Today we're back in the Bavarian Forest for a 🚴‍♀️. A cool ride. It offers asphalt, forest roads, roots, gravel, and consistently beautiful trails. The highlight, the three castles (the ruins of Neunussberg and Altnussberg, as well as Kollnburg Castle), are definitely worth a visit for the view alone.
We had the brilliant idea of also taking in the Pröller; …

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May 19, 2024,3-Burgen-Runde Viechtach

Mountain bike tour with start/finish in Viechtach, which leads along beautiful forest paths and trails to the three castles in Neunußberg, Altnußberg and Kollnburg.

45 kilometers and around 1000 meters of elevation gain are on the speedometer after the varied tour.

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August 23, 2024,🚵‍♂️Bergradltour im 🌲Bayerwald🌲- ⚔️3-Burgen-Runde Viechtach - 🏞️Großer Pfahl, die weiße 👹 "Teufelsmauer" 23.08.2024

Once again we are out and about in the Bavarian Forest and this time Wolfgang and I have chosen a very special treat. We went on the 3-castle tour starting in Viechtach. A challenging tour with lots of climbs, nice forest paths and some single trail sections. The beautiful route is accompanied by great views, the black rain, of course …

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August 20, 2023,MTB 07 Hoch über dem Regental

Another tour from the book Mountain Biking Bavarian Forest.
Tour #7
From Viechtach to the Neunußberg castle ruins, on to Gumpenried and via the Altnußberg castle ruins back to Viechtach.
In the mountain bike map of the Sankt Englmar and Viechtach region, this is Tour 37 (Castle Tour) It is also signposted as such.

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