| Lopérec | |
| Native Name: | Lopereg |
| Commune Status: | Commune |
| Coordinates: | 48.2781°N -4.0461°W |
| Elevation Min M: | 11 |
| Elevation Max M: | 316 |
| Insee: | 29139 |
| Postal Code: | 29590 |
| Arrondissement: | Châteaulin |
| Canton: | Carhaix-Plouguer |
| Mayor: | Jean-Yves Crenn[1] |
| Term: | 2020 - 2026 |
| Area Km2: | 39.49 |
Lopérec (in French pronounced as /lɔpeʁɛk/; Breton: Lopereg) is a commune in the Finistère department of Brittany, in north-western France. It is part of the canton of Carhaix-Plouguer and the arrondissement of Châteaulin.[2] Lopérec is located within the Parc naturel régional d'Armorique. Its name derives from the sixth-century Cornish saint Perec.[3]
Lopérec borders the Monts d'Arrée range, to the north and east, and the Châteaulin basin to the south. The municipal boundary, stretching north-south and sloping toward the west, covers an area of 3,959 hectares (39.5 km2). It is characterised by a hilly landscape, with altitudes ranging from 316 metres to 11 metres above sea level, with the village situated at around 52 metres.
Lopérec is located approximately 9 kilometres (5.6mi) northeast of Châteaulin. Numerous rivers are found in the area, including the Douffine which originates from the south-western slopes of Roc'h Cléguer en Brasparts and forms the municipal boundary to Pleyben. Also present is the Rivoal (or Saint-Rivoal River), which comes from Saint-Rivoal and forms the boundary towards the east with the municipality of the same name. Before it passes under the Quimper to Landerneau railway viaduct, it is joined on the right by the Lenturec stream, which traverses the entire commune and passes just south of Lopérec town. Downstream, another small right-bank tributary of the Douffine forms the edge of Pont-de-Buis-lès-Quimerc'h municipality.
Inhabitants of Lopérec are called Lopérécois in French.