The best hiking routes in Łomżyński Park Krajobrazowy Doliny Narwi

Łomżyński Park Krajobrazowy Doliny Narwi protects a distinct section of the Narew river valley where the water is squeezed between high, steep hillsides rather than spreading into vast, flat marshes. Walking here means navigating a sharp contrast between the dry, sandy heights of the moraine hills and the wet, peat-dominated riverbed below. You will notice how the pine forests on the upper slopes quickly give way to damp alder woods and reed beds as you descend toward the water.

Underfoot, the paths change character rapidly. The high-altitude trails follow firm, sandy tracks along the ridges, which offer clear views across the winding river channels. Down in the valley bottom, the ground transitions to soft peat and clay, where wooden boardwalks are occasionally laid to help you cross the wettest sections near the riverbanks. This is not a wilderness of endless flat swamps, but a landscape of distinct vertical changes where the river has carved a deep trench into the surrounding uplands.

In May, the lower meadows near the water turn bright yellow with blooming marsh marigolds, marking the transition from spring high waters to the summer growing season. While the viewpoint near Siemień Nadrzeczny attracts more visitors, the paths leading through the narrow side ravines remain quiet. You should expect a terrain of short, steep climbs and descents rather than long, flat walks, requiring a bit more effort than the typical lowland river valley.