Type of route Circular

Distance 5.6 km

Degree of difficulty Low

Duration on foot 1½ hours

Duration by bicycle 30 minutes

Recommended time of year Spring, Autumn


Lerma is part of the Mancomunidad Virgen de Manciles, and is the centre of administration for the rural district of Arlanza, in the province of Burgos. The River Arlanza passes through the municipality, and is of great importance to local agriculture, to the working of the mills, and as a recreational resource. Its great ecological richness led to it being given the status of the ‘Riberas del Río Arlanza and Tributaries’ Site of Community Importance (SCI).

 The route starts at the Town Hall, the building was originally that of the Santa Teresa Convent. It descends a steep slope to the wide river valley of the River Arlanza. After passing an area of vegetable gardens and crops we continue along the river bank in the shade of the abundant riverside vegetation: here the Riparian forest and the abundance of fish and insects provide a diet for the Kingfisher, Grey Heron, Nightingales, and Typical Warblers, among other birds. After passing the river dam, the route turns to the right to return to Lerma across cultivated fields.


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