4.7
(55)
537
riders
45
rides
No traffic gravel bike trails in Rezerwat Mosty Kalińskie traverse a landscape characterized by the wide, shallow Długa River valley and its surrounding diverse forests, including rare riparian types and mixed pine forests on low dunes. The terrain offers a mix of gravel roads, forest paths, and some uneven sections, providing varied surfaces for gravel biking. This nature reserve, located in Poland's Mazowieckie Voivodeship, features marshy areas alongside open habitats, contributing to its ecological diversity.
Last updated: May 12, 2026
5.0
(6)
71
riders
64.2km
03:27
140m
140m
Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
5.0
(1)
7
riders
17.4km
00:58
40m
40m
Easy gravel ride. Great for any fitness level. Mostly paved surfaces. Suitable for all skill levels.

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4.7
(3)
12
riders
Easy gravel ride. Great for any fitness level. Mostly paved surfaces. Suitable for all skill levels.
5.0
(1)
5
riders
Hard gravel ride. Great for any fitness level. You may need to push your bike for some segments of this route.
5.0
(4)
12
riders
Easy gravel ride. Great for any fitness level. Mostly paved surfaces. Suitable for all skill levels.
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Popular around Rezerwat Mosty Kalińskie
Section of the "Velo Mazovia" trail I don't know how one can recommend this. From the Zabraniec side, a "pump track", brutal transit traffic (noise), a large amount of sand and gravel deposited on the cycle path. Nothing pleasant, neither on a road bike nor on an MTB.
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Currently, it is passable even after rains
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It is better not to venture into this area because it is a training ground and they issue tickets.
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not only the Battle of Warsaw - there is also Katyn, Smolensk, Popiełuszko...
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August 2025 - the river is not flowing, you can cross it with dry feet
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There is another place to cross the river than the ford. About 50 m upstream there are footbridges, or the aforementioned Kaliń bridges.
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Ponds only in name because they've been drained. For now only reed farming. When they fill them with water again it will be a mecca for birdwatchers, including me. For now only mud and reeds.....
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If they filled the ponds next to it with water again, it would be awesome. But it's not bad. I recommend it.
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There are over 50 no-traffic gravel bike trails in Rezerwat Mosty Kalińskie. These routes offer a diverse range of experiences, from easy loops to more challenging rides through the reserve's unique landscapes.
You can expect a varied terrain, including gravel roads, forest paths, and some sections with uneven concrete slabs, particularly along the Długa river. The reserve features diverse landscapes from marshy river valleys to ancient forests and pine-covered dunes, providing a rich and engaging experience for gravel bikers.
Yes, Rezerwat Mosty Kalińskie offers 29 easy gravel bike trails suitable for families. These routes are generally accessible and allow you to explore the natural beauty without significant technical challenges. An example is the Footbridge over the long stream – Ossów Ponds loop from Ossów, which provides a pleasant ride through the area.
The trails in Rezerwat Mosty Kalińskie showcase a rich array of natural features. You'll encounter the wide, marshy Długa River valley, diverse forests including rare riparian forests, and low dunes covered with pine forests. Keep an eye out for the View of the Długa River and the unique Mosty Kalińskie Nature Reserve itself.
Yes, the reserve has a unique historical layer. It occupies former military training grounds, and you can still find remnants of old roads and infrastructure from the former villages of Kaleń, Mamki, and Dembe Małe. These offer a glimpse into the region's past, adding an interesting dimension to your ride.
The komoot community highly rates the gravel biking experience in Rezerwat Mosty Kalińskie, with an average score of 4.6 stars from 66 ratings. Reviewers often praise the tranquil escape into nature, the diverse landscapes, and the extensive network of trails that provide a sense of adventure away from traffic.
Yes, for more experienced riders seeking a challenge, there are 9 difficult gravel bike routes available. These routes might include longer distances or more varied terrain. An example is the Gravel Forest Road – Mosty Kalińskie Nature Reserve loop from Sulejówek, which offers a more demanding ride.
Beyond the natural beauty, you can discover interesting points like the Concrete Slab Ford Over the River and the historic Kalińskie Bridges. These spots offer unique photo opportunities and a chance to appreciate the blend of natural and historical elements in the reserve.
Absolutely. For those looking for longer rides, routes like the Kalińskie Bridges Nature Reserve – Gravel Forest Road loop from Sulejówek cover significant distances, allowing for extended exploration of the region's no-traffic gravel paths and forests.
While the reserve is beautiful year-round, spring and autumn generally offer the most pleasant conditions for gravel biking. Spring brings fresh greenery and blooming flora, while autumn provides stunning fall colors. During higher water levels, some river sections might require preparedness for potentially wet feet, though recent improvements have made many crossings more passable.
Yes, many of the gravel bike trails in Rezerwat Mosty Kalińskie are designed as loops, allowing you to start and end at the same point. For instance, the Gravel Forest Road – Mosty Kalińskie Nature Reserve loop from Ossów is a popular circular option, perfect for exploring the reserve without retracing your steps.


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