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Germany
North Rhine-Westphalia
Euskirchen
Hellenthal

Trail along the Oleftalsperre – Olef Reservoir loop from Hellenthal

Routes
Hiking trails & Routes
Germany
North Rhine-Westphalia
Euskirchen
Hellenthal

Trail along the Oleftalsperre – Olef Reservoir loop from Hellenthal

Moderate

4.5

(335)

1,142

hikers

Trail along the Oleftalsperre – Olef Reservoir loop from Hellenthal

04:00

14.9km

180m

Hiking

Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels. The starting point of the route is accessible with public transport.

Last updated: October 1, 2026

Tips

Temporary access restrictions

Includes segments with temporary access restrictions. Check ahead to confirm restricted segments are open to the public.

After 14.2 km for 79 m

Waypoints

A

Start point

Bus stop

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1

1.01 km

Trail along the Oleftalsperre

Highlight (Segment) • Trail

A nice piece of trail with a view of the Olaf dam

Translated by Google •

Tip by

2

3.50 km

Oleft Reservoir Peninsula

Highlight • Lake

Not easy to get to the lake or even to take a picture. If you have the opportunity, you should take advantage of it.

Translated by Google •

Tip by

3

8.05 km

Oleftalsperre Inlet

Highlight • River

From the inlet you can drive towards Hollerrath or Belgium 🚴‍♂️👍🏻.

Translated by Google •

Tip by

4

12.0 km

Very nice place for a rest or just to relax.

Translated by Google •

Tip by

5

13.5 km

Nice rest area that offers us a great view of the Oleftalsperre.

Translated by Google •

Tip by

6

13.5 km

Oleftalsperre Dam

Highlight • Monument

View over the over 50 meter high dam of the Oleftalsperre.

Translated by Google •

Tip by

7

13.7 km

Olef Reservoir

Highlight • Lake

The Oleftalsperre was built in 1954-59. Due to cracks, the barrier had to be reinforced twice afterwards. Since 1965, the barrier has been used for drinking water, energy production and …

Translated by Google •

Tip by

8

14.3 km

Olef Dam Wall

Highlight • Monument

Oleftalsperre dam. After a steep climb, a fixed circular path of approximately 14km lies ahead.

Translated by Google •

Tip by

B

14.9 km

End point

Bus stop

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Way Types & Surfaces

Way Types

13.4 km

956 m

315 m

182 m

Surfaces

8.02 km

5.21 km

837 m

600 m

114 m

< 100 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 (490 m)

Lowest point (410 m)

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Weather

Powered by Foreca

Thursday 8 October

11°C

5°C

94 %

Additional weather tips

Max wind speed: 34.0 km/h

to get more detailed weather forecasts along your route

Comments

March 19, 2025,Wanderung um die Oleftalsperre
Man, that felt so good 🙏☺️
Wonderful...
With fantastic weather and hardly anyone around...

Showing Translation

Another lovely hike under the winter sun. Be careful as the ground is slippery in places, but otherwise the paths are very pleasant. And part of the lake is frozen over. Impressive!

Showing Translation

Today we walked around the Oleftalsperre.
Always beautiful

Showing Translation

September 14, 2024,Rund um die Oleftalsperre
Small circuit around the Oleftalsperre.
The path is largely flat; there is only a small climb to the height of the dam.
The dense vegetation only sporadically allows a clear view of the long reservoir.

Showing Translation

February 22, 2025,Rund um die Olef-Talsperre
The dry, spring-like weather is crying out for movement. And so today we went around the Olef Dam near Hellenthal. 13.5 km was definitely enough for the start of the season. Luckily the birch catkins are not yet in full bloom. Visually, the paired flower heads are very attractive, even if they are "eye-catching" when exposed to a little more …

Showing Translation

Today I had a very special goal on my list: to hike all the way around the Oleftalsperre. 🏞️💧 To do this, I drove to Hellenthal 🚗, and from there I started the climb from the foot of the dam to the top. The first part was tough, because the gradient was quite steep - but I mastered it quickly …

Showing Translation

After spending the night at the campsite "Naturcampinganlage Schafbachmühle", my companion and I met up with a friend who lives nearby. Together we walked a loop around the Olefsee and past the Oleftalsperre 😁
We started at the large, free parking lot directly at the dam.
It was a beautiful circular trail with good conversations and pleasant temperatures 😄🥾

Showing Translation

October 6, 2024,Oleftalsperre
... in autumn you can be sure of the roaring sounds of the stags during the rut. Eerily beautiful. Otherwise the lake is an oasis of silence. Always nice.

Showing Translation

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