Nature Reserve Guide
Heiliges Meer-Heupen is a distinctive nature reserve spanning 260 hectares in North Rhine-Westphalia, characterized by a unique landscape of diverse aquatic environments and habitats. This area features nutrient-poor heathland ponds, the expansive Große Heilige Meer, and numerous sinkhole lakes formed by geological processes. The varied terrain, including heath, lean grassland, fens, and alder carrs, provides a rich setting for outdoor activities such as hiking, touring cycling, road cycling, mountain biking, and more. It is recognized for its ecological significance and…
158
Routes
4.4
(735)
Average rating
3551
People visited

4.6
(378)
1,279
hikers
9.21km
02:20
20m
20m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.

4.4
(57)
241
hikers
3.13km
00:48
10m
10m
Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.

3.9
(8)
30
hikers
9.42km
02:27
60m
60m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.

5.0
(10)
43
hikers
4.19km
01:03
10m
10m
Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.
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4.5
(8)
112
riders
Moderate road ride. Good fitness required. Some segments of this route may be unpaved and difficult to ride.

3.0
(1)
44
riders
14.1km
00:36
110m
110m
Easy road ride. Great for any fitness level. Mostly well-paved surfaces and easy to ride.

5.0
(2)
28
riders
40.8km
01:43
80m
80m
Moderate road ride. Great for any fitness level. Some segments of this route may be unpaved and difficult to ride.

5.0
(2)
35
riders
65.6km
02:36
210m
210m
Moderate road ride. Good fitness required. Mostly well-paved surfaces and easy to ride.
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4.4
(12)
43
riders
49.4km
02:51
70m
70m
Moderate bike ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.

4.0
(2)
59
riders
Easy bike ride. Great for any fitness level. Mostly paved surfaces. Suitable for all skill levels.

4.9
(9)
37
riders
28.1km
01:38
30m
30m
Easy bike ride. Great for any fitness level. Mostly paved surfaces. Suitable for all skill levels.

4.7
(9)
38
riders
92.9km
05:33
340m
340m
Hard bike ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
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4.5
(4)
31
riders
49.8km
03:30
340m
340m
Hard mountain bike ride. Good fitness required. Advanced riding skills necessary. Some portions of the route may require you to push your bike.

4.7
(7)
22
riders
28.2km
01:47
70m
70m
Easy mountain bike ride. Great for any fitness level. Suitable for all skill levels.

4.5
(2)
5
riders
Easy mountain bike ride. Great for any fitness level. Suitable for all skill levels.

3.5
(2)
7
riders
20.8km
01:33
170m
170m
Easy mountain bike ride. Great for any fitness level. Suitable for all skill levels.
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5.0
(1)
29
runners
9.19km
00:58
10m
10m
Moderate run. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.

16
runners
15.2km
01:36
70m
70m
Hard run. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

10
runners
13.9km
01:32
100m
100m
Moderate run. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.

4.0
(3)
7
runners
5.93km
00:37
10m
10m
Moderate run. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
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8
riders
50.1km
02:45
200m
200m
Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.

3.5
(2)
7
riders
36.1km
02:06
190m
190m
Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.

3
riders
Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.

3.0
(1)
4
riders
Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
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Heiliges Meer-Heupen is a 260-hectare nature reserve in North Rhine-Westphalia, known for its unique geological features and diverse habitats. It contains the Große Heilige Meer, the largest naturally formed inland lake in the region, alongside numerous sinkhole lakes and heathlands. The reserve is a site of significant ecological research.
Heiliges Meer-Heupen offers a variety of outdoor activities, including hiking, touring cycling, road cycling, mountain biking, jogging, and gravel biking. The reserve features 92 routes for these sports. Visitors have rated the routes an average of 4.4 out of 5 stars.
Popular hiking trails include the 5.7-mile (9.2 km) Heiliges Meer – Teutoschleifen, rated 4.6 stars. The Sinkhole Lake – Great Holy Lake loop is an easy 1.9-mile (3.1 km) option. For more choices, explore Hiking in Heiliges Meer-Heupen.
Yes, Heiliges Meer-Heupen offers several easy hiking trails suitable for beginners. The Sinkhole Lake – Great Holy Lake loop is an easy 1.9-mile (3.1 km) route. Another easy option is the Heathland at the Heiliges Meer – Great Holy Lake loop, which is 1.6 miles (2.6 km). More easy routes can be found in the Easy hikes in Heiliges Meer-Heupen guide.
The reserve and surrounding area offer routes for touring, road, and gravel cycling. A popular touring route is the 17.4-mile (28 km) Herthasee – View of the Hörstel Aa loop. For more options, consult the Cycling in Heiliges Meer-Heupen guide.
Yes, mountain biking routes are available in and around Heiliges Meer-Heupen. An easy 11.7-mile (18.8 km) option is the Glück Auf Monument – Historic Mining Tunnel (1752) loop. More trails can be explored in the MTB Trails in Heiliges Meer-Heupen guide.
The reserve is characterized by its sinkhole lakes, formed by the dissolution of saline rocks deep underground. The Große Heilige Meer is the largest naturally formed inland lake in North Rhine-Westphalia. The landscape also features nutrient-poor heathland ponds, fens, and alder carrs, supporting unique plant life.
Heiliges Meer-Heupen is home to diverse bird species, including the Eurasian curlew, northern lapwing, and yellow wagtail in the damp meadows. Hedgerows and carrs provide habitats for the lesser spotted woodpecker, golden oriole, and common linnet. Other species like Wood Lark and European Honey-buzzard are also present.
Heiliges Meer-Heupen is a popular destination, with more than 2,500 visitors recorded on komoot. The 92 available routes have received over 500 ratings, averaging 4.4 out of 5 stars. This indicates a high level of satisfaction among outdoor enthusiasts.
The Education and Research Center Heiliges Meer, operated by the LWL-Museum für Naturkunde, serves as a primary information hub. It offers exhibitions, courses, and excursions. Further details can be found on the LWL-Museum für Naturkunde website.
Yes, komoot offers several guides for Heiliges Meer-Heupen. These include Hiking in Heiliges Meer-Heupen, Cycling in Heiliges Meer-Heupen, and Easy hikes in Heiliges Meer-Heupen. Guides for road cycling, mountain biking, jogging, and gravel biking are also available.
Key attractions include the Große Heilige Meer, the numerous unique sinkhole lakes, and the expansive heathlands. The Education and Research Center Heiliges Meer also serves as a point of interest, offering insights into the reserve's ecology. The area is rich in natural monuments and lakes.
Trails in Heiliges Meer-Heupen are generally easy to walk. However, paths can become muddy during winter months or after heavy rainfall. Sturdy footwear is recommended for navigating potentially wet or uneven terrain.

