4.9
(21)
417
riders
43
rides
Mountain biking around Middelharnis offers diverse terrain across the island of Goeree-Overflakkee. The region features extensive polder lands and protective dykes, providing numerous cycling routes. Riders can also explore dynamic delta areas and distinct dune landscapes, which offer varied terrain with climbs. Forests and natural reserves further contribute to the scenic beauty and varied environment for mountain biking.
Last updated: July 6, 2026
4.0
(2)
41
riders
Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.
5.0
(3)
34
riders
Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.

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27
riders
Moderate mountain bike ride. Great for any fitness level. Advanced riding skills necessary.
5.0
(2)
9
riders
Moderate mountain bike ride. Good fitness required. Advanced riding skills necessary.
17
riders
Moderate mountain bike ride. Great for any fitness level. Advanced riding skills necessary.
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By 2025, the facility was already very old and partially overgrown.
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The marina is only accessible with an access authorization.
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Currently quite overgrown and barely passable.
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The movable bridge can be bypassed.
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M67 The tram locomotive M67 is the first diesel locomotive to be put into service in 1937 by the then Rotterdamsche Tramweg Maatschappij (RTM). The fully restored locomotive is one of the attractions in the depot of the RTM Museum in Ouddorp. Not only from a technical point of view, but also from a cultural-historical point of view. In 1909, the RTM was established on the island: from Middelharnis via Sommelsdijk, Dirksland, Melissant, Stellendam and Goadereede to Ouddorp. And in the other direction: from Middelharnis via Nieuwe-Tonge and Oude-Tonge to Ooltgensplaat, on the eastern tip of the island. Connections to the ports of Dirksland, Oude-Tonge and Ooltgensplaat were established especially for freight transport. In total, about 45 kilometers of tram tracks were laid on the island, often next to normal roads. The M67 was used by the RTM after the war. Passenger traffic in Goeree-Overflakkee was stopped in 1956. A year later, freight traffic also ended, and a small stretch of track between the port and the station remained in use in Middelharnis until 1961. Some of the equipment went to the museum in Utrecht, another part to a foundation in Hellevoetsluis. There a group of volunteers maintained a small, historical process. In 1989 it moved to Ouddorp, where a five-kilometer tram line with a depot with the RTM museum was built in 1992.
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The Grevelingenmeer is the largest saltwater lake in Europe. It is closed off from tidal water by the Grevelingendam in the east and the Brouwersdam in the west and is therefore considered to be rather stagnant and often oxygen-free water where little underwater life can be expected. That the latter does not apply to all parts of the Grevelingenmeer is evident at Battenoord, where a large group of flamingos has been standing or coming to spend the winter for several years (2022). Some are deep pink, which means that they eat a lot of shrimp and indicates a rich underwater life. At Battenoord you can spot the flamingos near the harbor or at the mills and in recent years (since 2022) you can even spot three species of flamingos there: the European flamingo, Chilean flamingo and the Caribbean flamingo.
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There are over 35 mountain bike trails available around Middelharnis. These routes cater to various skill levels, with 10 easy, 24 moderate, and 1 difficult trail to explore.
Mountain biking around Middelharnis offers a diverse landscape. You'll encounter extensive polder lands and protective dykes, providing mostly flat to gently rolling terrain. Along the coast, particularly near the North Sea, there are unique dune landscapes that offer more varied terrain with invigorating climbs. Additionally, some trails wind through forests and natural reserves, such as the Kwade Hoek, adding to the scenic variety.
Yes, Middelharnis offers several family-friendly mountain bike routes, particularly those traversing the polder lands and along dykes, which tend to be less challenging. There are 10 easy-rated trails in the area, suitable for riders looking for a more relaxed experience. For example, the route Dirksland Harbor – Dirklandse Sas Lock loop from Goeree-Overflakkee is a moderate option that is relatively shorter and offers pleasant views.
While many natural areas in the Netherlands welcome dogs, specific rules can vary by trail and nature reserve. It's generally advisable to keep dogs on a leash, especially in protected areas like the Kwade Hoek nature reserve, where wildlife (such as Fjord horses and Heck cattle) roams freely. Always check local signage or official websites for the most current regulations regarding dogs on specific trails.
Yes, many of the mountain bike routes around Middelharnis are designed as circular loops, making them convenient for starting and ending at the same point. Examples include Goedereede Village Square – Historic Center of Goedereede loop from Sommelsdijk-Centrum and Old Town Hall Ooltgensplaat – Cycling on the Dike loop from Goeree-Overflakkee, both of which offer extensive loops through the region's characteristic landscapes.
The region around Middelharnis offers several points of interest. You might encounter the impressive Haringvliet Dam and Haringvliet Locks, which features a cycling path. The Dike water (Grevelingen) and the History of the Grevelingenmeer offer insights into the delta works. You could also spot the De Visserman Statue at Havenhoofd or the Hellevoetsluis Lighthouse. The Kwade Hoek nature reserve itself is a highlight, with varied landscapes and opportunities to see Fjord horses and Heck cattle.
Parking availability varies by trailhead. Many routes that start from towns or villages like Sommelsdijk-Centrum or Goeree-Overflakkee often have public parking options nearby. For trails in more rural or natural areas, designated parking spots are usually indicated. It's advisable to check the specific route details on komoot for parking information at the trailhead you plan to use.
The spring (April-May) and autumn (September-October) months generally offer the most pleasant conditions for mountain biking in Middelharnis, with milder temperatures and less crowded trails. Summer can also be good, but be prepared for potentially warmer weather and more visitors. Winter riding is possible, but trails might be wet or muddy, especially in polder areas, and strong winds can be a factor along the dykes and coast.
While much of the region is characterized by polders and dykes, there are dedicated 'technical trails' located centrally on Goeree-Overflakkee, near Dirksland and Oude-Tonge. These trails wind through forests and polders, offering more challenging sections. Additionally, the 4.7-kilometer mountain bike trail on the Brouwersdam, near Port Zélande, features exciting rides through woods and undergrowth, along with invigorating climbs in the dunes, providing a more technical experience.
The mountain bike trails around Middelharnis are highly rated by the komoot community, with an average score of 4.9 stars from over 20 reviews. Riders often praise the diverse terrain, from the expansive polder landscapes to the unique dune sections, and the well-maintained paths along the dykes. The opportunity to explore the natural beauty of Goeree-Overflakkee, including its delta areas and reserves, is also frequently highlighted.
Yes, several routes provide excellent views of these significant water bodies. The island is bordered by the Haringvliet to the north and the Grevelingenmeer to the south, and many trails follow the dykes along their edges. For instance, the Marina on Lake Grevelingen – Brouwersdam Cycle Path loop from De Goede Ree offers extensive views of the Grevelingenmeer and the Brouwersdam, where fresh and saltwater meet.
The mountain bike trails around Middelharnis vary significantly in length. You can find shorter routes, such as the Dirksland Harbor – Dirklandse Sas Lock loop from Goeree-Overflakkee at approximately 29 km (18 miles), which takes about 1 hour 48 minutes. Longer routes, like the Goedereede Village Square – Historic Center of Goedereede loop from Sommelsdijk-Centrum, can be up to 70 km (44 miles) and take around 4 hours to complete, offering options for various endurance levels.


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